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Commit | Line | Data |
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23af32e6 NS |
1 | /* Routines required for instrumenting a program. */ |
2 | /* Compile this one with gcc. */ | |
3 | /* Copyright (C) 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, | |
852b75ed | 4 | 2000, 2001, 2002, 2003, 2004, 2005, 2008, 2009, 2010, 2011 |
66647d44 | 5 | Free Software Foundation, Inc. |
23af32e6 NS |
6 | |
7 | This file is part of GCC. | |
8 | ||
9 | GCC is free software; you can redistribute it and/or modify it under | |
10 | the terms of the GNU General Public License as published by the Free | |
748086b7 | 11 | Software Foundation; either version 3, or (at your option) any later |
23af32e6 NS |
12 | version. |
13 | ||
23af32e6 NS |
14 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
15 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
16 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
17 | for more details. | |
18 | ||
748086b7 JJ |
19 | Under Section 7 of GPL version 3, you are granted additional |
20 | permissions described in the GCC Runtime Library Exception, version | |
21 | 3.1, as published by the Free Software Foundation. | |
22 | ||
23 | You should have received a copy of the GNU General Public License and | |
24 | a copy of the GCC Runtime Library Exception along with this program; | |
25 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
26 | <http://www.gnu.org/licenses/>. */ | |
23af32e6 | 27 | |
23af32e6 NS |
28 | #include "tconfig.h" |
29 | #include "tsystem.h" | |
30 | #include "coretypes.h" | |
31 | #include "tm.h" | |
852b75ed | 32 | #include "libgcc_tm.h" |
33e3e24d | 33 | #include "gthr.h" |
23af32e6 | 34 | |
474f141e NS |
35 | #if defined(inhibit_libc) |
36 | #define IN_LIBGCOV (-1) | |
37 | #else | |
474f141e NS |
38 | #define IN_LIBGCOV 1 |
39 | #if defined(L_gcov) | |
40 | #define GCOV_LINKAGE /* nothing */ | |
41 | #endif | |
42 | #endif | |
43 | #include "gcov-io.h" | |
44 | ||
45 | #if defined(inhibit_libc) | |
46 | /* If libc and its header files are not available, provide dummy functions. */ | |
47 | ||
48 | #ifdef L_gcov | |
49 | void __gcov_init (struct gcov_info *p __attribute__ ((unused))) {} | |
50 | void __gcov_flush (void) {} | |
51 | #endif | |
52 | ||
4e8ee9cb TJ |
53 | #ifdef L_gcov_reset |
54 | void __gcov_reset (void) {} | |
55 | #endif | |
56 | ||
57 | #ifdef L_gcov_dump | |
58 | void __gcov_dump (void) {} | |
59 | #endif | |
60 | ||
474f141e NS |
61 | #ifdef L_gcov_merge_add |
62 | void __gcov_merge_add (gcov_type *counters __attribute__ ((unused)), | |
63 | unsigned n_counters __attribute__ ((unused))) {} | |
64 | #endif | |
65 | ||
af166e5d ZD |
66 | #ifdef L_gcov_merge_single |
67 | void __gcov_merge_single (gcov_type *counters __attribute__ ((unused)), | |
68 | unsigned n_counters __attribute__ ((unused))) {} | |
69 | #endif | |
70 | ||
71 | #ifdef L_gcov_merge_delta | |
72 | void __gcov_merge_delta (gcov_type *counters __attribute__ ((unused)), | |
73 | unsigned n_counters __attribute__ ((unused))) {} | |
74 | #endif | |
75 | ||
474f141e | 76 | #else |
23af32e6 | 77 | |
23af32e6 | 78 | #include <string.h> |
474f141e | 79 | #if GCOV_LOCKED |
23af32e6 NS |
80 | #include <fcntl.h> |
81 | #include <errno.h> | |
c2cd64b5 | 82 | #include <sys/stat.h> |
23af32e6 | 83 | #endif |
09780dfb | 84 | |
4e8ee9cb TJ |
85 | extern void gcov_clear (void) ATTRIBUTE_HIDDEN; |
86 | extern void gcov_exit (void) ATTRIBUTE_HIDDEN; | |
87 | extern int gcov_dump_complete ATTRIBUTE_HIDDEN; | |
88 | ||
09780dfb | 89 | #ifdef L_gcov |
ca29da43 | 90 | #include "gcov-io.c" |
23af32e6 | 91 | |
5366b186 NS |
92 | struct gcov_fn_buffer |
93 | { | |
94 | struct gcov_fn_buffer *next; | |
95 | unsigned fn_ix; | |
96 | struct gcov_fn_info info; | |
97 | /* note gcov_fn_info ends in a trailing array. */ | |
98 | }; | |
99 | ||
23af32e6 NS |
100 | /* Chain of per-object gcov structures. */ |
101 | static struct gcov_info *gcov_list; | |
102 | ||
992f396f GZ |
103 | /* Size of the longest file name. */ |
104 | static size_t gcov_max_filename = 0; | |
105 | ||
4e8ee9cb TJ |
106 | /* Flag when the profile has already been dumped via __gcov_dump(). */ |
107 | int gcov_dump_complete = 0; | |
108 | ||
b8698a0f L |
109 | /* Make sure path component of the given FILENAME exists, create |
110 | missing directories. FILENAME must be writable. | |
992f396f GZ |
111 | Returns zero on success, or -1 if an error occurred. */ |
112 | ||
160e2e4f | 113 | static int |
992f396f GZ |
114 | create_file_directory (char *filename) |
115 | { | |
78e7dd6a KT |
116 | #if !defined(TARGET_POSIX_IO) && !defined(_WIN32) |
117 | (void) filename; | |
118 | return -1; | |
119 | #else | |
992f396f GZ |
120 | char *s; |
121 | ||
78e7dd6a KT |
122 | s = filename; |
123 | ||
124 | if (HAS_DRIVE_SPEC(s)) | |
125 | s += 2; | |
126 | if (IS_DIR_SEPARATOR(*s)) | |
127 | ++s; | |
128 | for (; *s != '\0'; s++) | |
992f396f GZ |
129 | if (IS_DIR_SEPARATOR(*s)) |
130 | { | |
131 | char sep = *s; | |
132 | *s = '\0'; | |
133 | ||
134 | /* Try to make directory if it doesn't already exist. */ | |
135 | if (access (filename, F_OK) == -1 | |
78e7dd6a | 136 | #ifdef TARGET_POSIX_IO |
992f396f | 137 | && mkdir (filename, 0755) == -1 |
78e7dd6a KT |
138 | #else |
139 | && mkdir (filename) == -1 | |
140 | #endif | |
992f396f GZ |
141 | /* The directory might have been made by another process. */ |
142 | && errno != EEXIST) | |
143 | { | |
144 | fprintf (stderr, "profiling:%s:Cannot create directory\n", | |
145 | filename); | |
146 | *s = sep; | |
147 | return -1; | |
148 | }; | |
b8698a0f | 149 | |
992f396f GZ |
150 | *s = sep; |
151 | }; | |
152 | return 0; | |
4969c0d8 | 153 | #endif |
78e7dd6a | 154 | } |
992f396f | 155 | |
04dbc287 NS |
156 | static struct gcov_fn_buffer * |
157 | free_fn_data (const struct gcov_info *gi_ptr, struct gcov_fn_buffer *buffer, | |
158 | unsigned limit) | |
159 | { | |
160 | struct gcov_fn_buffer *next; | |
161 | unsigned ix, n_ctr = 0; | |
162 | ||
163 | if (!buffer) | |
164 | return 0; | |
165 | next = buffer->next; | |
166 | ||
167 | for (ix = 0; ix != limit; ix++) | |
168 | if (gi_ptr->merge[ix]) | |
169 | free (buffer->info.ctrs[n_ctr++].values); | |
170 | free (buffer); | |
171 | return next; | |
172 | } | |
173 | ||
5366b186 | 174 | static struct gcov_fn_buffer ** |
04dbc287 NS |
175 | buffer_fn_data (const char *filename, const struct gcov_info *gi_ptr, |
176 | struct gcov_fn_buffer **end_ptr, unsigned fn_ix) | |
5366b186 | 177 | { |
04dbc287 | 178 | unsigned n_ctrs = 0, ix = 0; |
5366b186 | 179 | struct gcov_fn_buffer *fn_buffer; |
04dbc287 | 180 | unsigned len; |
5366b186 NS |
181 | |
182 | for (ix = GCOV_COUNTERS; ix--;) | |
183 | if (gi_ptr->merge[ix]) | |
184 | n_ctrs++; | |
185 | ||
04dbc287 NS |
186 | len = sizeof (*fn_buffer) + sizeof (fn_buffer->info.ctrs[0]) * n_ctrs; |
187 | fn_buffer = (struct gcov_fn_buffer *)malloc (len); | |
5366b186 NS |
188 | |
189 | if (!fn_buffer) | |
04dbc287 | 190 | goto fail; |
5366b186 NS |
191 | |
192 | fn_buffer->next = 0; | |
193 | fn_buffer->fn_ix = fn_ix; | |
194 | fn_buffer->info.ident = gcov_read_unsigned (); | |
195 | fn_buffer->info.lineno_checksum = gcov_read_unsigned (); | |
196 | fn_buffer->info.cfg_checksum = gcov_read_unsigned (); | |
197 | ||
198 | for (n_ctrs = ix = 0; ix != GCOV_COUNTERS; ix++) | |
199 | { | |
200 | gcov_unsigned_t length; | |
201 | gcov_type *values; | |
202 | ||
203 | if (!gi_ptr->merge[ix]) | |
204 | continue; | |
205 | ||
206 | if (gcov_read_unsigned () != GCOV_TAG_FOR_COUNTER (ix)) | |
5366b186 | 207 | { |
04dbc287 | 208 | len = 0; |
5366b186 NS |
209 | goto fail; |
210 | } | |
04dbc287 NS |
211 | |
212 | length = GCOV_TAG_COUNTER_NUM (gcov_read_unsigned ()); | |
213 | len = length * sizeof (gcov_type); | |
214 | values = (gcov_type *)malloc (len); | |
215 | if (!values) | |
216 | goto fail; | |
217 | ||
5366b186 NS |
218 | fn_buffer->info.ctrs[n_ctrs].num = length; |
219 | fn_buffer->info.ctrs[n_ctrs].values = values; | |
220 | ||
221 | while (length--) | |
222 | *values++ = gcov_read_counter (); | |
223 | n_ctrs++; | |
224 | } | |
225 | ||
226 | *end_ptr = fn_buffer; | |
227 | return &fn_buffer->next; | |
228 | ||
229 | fail: | |
04dbc287 NS |
230 | fprintf (stderr, "profiling:%s:Function %u %s %u \n", filename, fn_ix, |
231 | len ? "cannot allocate" : "counter mismatch", len ? len : ix); | |
232 | ||
233 | return (struct gcov_fn_buffer **)free_fn_data (gi_ptr, fn_buffer, ix); | |
234 | } | |
235 | ||
236 | /* Add an unsigned value to the current crc */ | |
237 | ||
238 | static gcov_unsigned_t | |
239 | crc32_unsigned (gcov_unsigned_t crc32, gcov_unsigned_t value) | |
240 | { | |
241 | unsigned ix; | |
242 | ||
243 | for (ix = 32; ix--; value <<= 1) | |
244 | { | |
245 | unsigned feedback; | |
246 | ||
247 | feedback = (value ^ crc32) & 0x80000000 ? 0x04c11db7 : 0; | |
248 | crc32 <<= 1; | |
249 | crc32 ^= feedback; | |
250 | } | |
251 | ||
252 | return crc32; | |
5366b186 NS |
253 | } |
254 | ||
992f396f GZ |
255 | /* Check if VERSION of the info block PTR matches libgcov one. |
256 | Return 1 on success, or zero in case of versions mismatch. | |
b8698a0f | 257 | If FILENAME is not NULL, its value used for reporting purposes |
992f396f | 258 | instead of value from the info block. */ |
b8698a0f | 259 | |
992f396f GZ |
260 | static int |
261 | gcov_version (struct gcov_info *ptr, gcov_unsigned_t version, | |
262 | const char *filename) | |
23af32e6 | 263 | { |
160e2e4f | 264 | if (version != GCOV_VERSION) |
23af32e6 | 265 | { |
330d2e2a NS |
266 | char v[4], e[4]; |
267 | ||
268 | GCOV_UNSIGNED2STRING (v, version); | |
269 | GCOV_UNSIGNED2STRING (e, GCOV_VERSION); | |
b8698a0f | 270 | |
160e2e4f NS |
271 | fprintf (stderr, |
272 | "profiling:%s:Version mismatch - expected %.4s got %.4s\n", | |
992f396f | 273 | filename? filename : ptr->filename, e, v); |
160e2e4f | 274 | return 0; |
23af32e6 | 275 | } |
160e2e4f | 276 | return 1; |
23af32e6 NS |
277 | } |
278 | ||
279 | /* Dump the coverage counts. We merge with existing counts when | |
280 | possible, to avoid growing the .da files ad infinitum. We use this | |
281 | program's checksum to make sure we only accumulate whole program | |
282 | statistics to the correct summary. An object file might be embedded | |
283 | in two separate programs, and we must keep the two program | |
284 | summaries separate. */ | |
285 | ||
4e8ee9cb | 286 | void |
23af32e6 NS |
287 | gcov_exit (void) |
288 | { | |
cdb23767 | 289 | struct gcov_info *gi_ptr; |
5366b186 NS |
290 | const struct gcov_fn_info *gfi_ptr; |
291 | struct gcov_summary this_prg; /* summary for program. */ | |
292 | struct gcov_summary all_prg; /* summary for all instances of program. */ | |
50612a04 ZD |
293 | struct gcov_ctr_summary *cs_ptr; |
294 | const struct gcov_ctr_info *ci_ptr; | |
04dbc287 NS |
295 | unsigned t_ix; |
296 | int f_ix; | |
50612a04 | 297 | gcov_unsigned_t c_num; |
992f396f GZ |
298 | const char *gcov_prefix; |
299 | int gcov_prefix_strip = 0; | |
300 | size_t prefix_length; | |
301 | char *gi_filename, *gi_filename_up; | |
04dbc287 | 302 | gcov_unsigned_t crc32 = 0; |
cdb23767 | 303 | |
4e8ee9cb TJ |
304 | /* Prevent the counters from being dumped a second time on exit when the |
305 | application already wrote out the profile using __gcov_dump(). */ | |
306 | if (gcov_dump_complete) | |
307 | return; | |
308 | ||
5366b186 | 309 | memset (&all_prg, 0, sizeof (all_prg)); |
cdb23767 | 310 | /* Find the totals for this execution. */ |
5366b186 | 311 | memset (&this_prg, 0, sizeof (this_prg)); |
cdb23767 | 312 | for (gi_ptr = gcov_list; gi_ptr; gi_ptr = gi_ptr->next) |
04dbc287 NS |
313 | { |
314 | crc32 = crc32_unsigned (crc32, gi_ptr->stamp); | |
315 | crc32 = crc32_unsigned (crc32, gi_ptr->n_functions); | |
316 | ||
317 | for (f_ix = 0; (unsigned)f_ix != gi_ptr->n_functions; f_ix++) | |
318 | { | |
319 | gfi_ptr = gi_ptr->functions[f_ix]; | |
50612a04 | 320 | |
04dbc287 NS |
321 | if (gfi_ptr && gfi_ptr->key != gi_ptr) |
322 | gfi_ptr = 0; | |
323 | ||
324 | crc32 = crc32_unsigned (crc32, gfi_ptr ? gfi_ptr->cfg_checksum : 0); | |
325 | crc32 = crc32_unsigned (crc32, | |
326 | gfi_ptr ? gfi_ptr->lineno_checksum : 0); | |
327 | if (!gfi_ptr) | |
328 | continue; | |
329 | ||
330 | ci_ptr = gfi_ptr->ctrs; | |
331 | for (t_ix = 0; t_ix != GCOV_COUNTERS_SUMMABLE; t_ix++) | |
332 | { | |
333 | if (!gi_ptr->merge[t_ix]) | |
334 | continue; | |
335 | ||
336 | cs_ptr = &this_prg.ctrs[t_ix]; | |
337 | cs_ptr->num += ci_ptr->num; | |
338 | crc32 = crc32_unsigned (crc32, ci_ptr->num); | |
339 | ||
340 | for (c_num = 0; c_num < ci_ptr->num; c_num++) | |
341 | { | |
342 | cs_ptr->sum_all += ci_ptr->values[c_num]; | |
343 | if (cs_ptr->run_max < ci_ptr->values[c_num]) | |
344 | cs_ptr->run_max = ci_ptr->values[c_num]; | |
345 | } | |
346 | ci_ptr++; | |
347 | } | |
348 | } | |
349 | } | |
cdb23767 | 350 | |
78e7dd6a KT |
351 | { |
352 | /* Check if the level of dirs to strip off specified. */ | |
353 | char *tmp = getenv("GCOV_PREFIX_STRIP"); | |
354 | if (tmp) | |
355 | { | |
356 | gcov_prefix_strip = atoi (tmp); | |
357 | /* Do not consider negative values. */ | |
358 | if (gcov_prefix_strip < 0) | |
359 | gcov_prefix_strip = 0; | |
360 | } | |
361 | } | |
5366b186 | 362 | |
992f396f GZ |
363 | /* Get file name relocation prefix. Non-absolute values are ignored. */ |
364 | gcov_prefix = getenv("GCOV_PREFIX"); | |
78e7dd6a | 365 | if (gcov_prefix) |
992f396f | 366 | { |
992f396f GZ |
367 | prefix_length = strlen(gcov_prefix); |
368 | ||
9d6aab7e | 369 | /* Remove an unnecessary trailing '/' */ |
992f396f GZ |
370 | if (IS_DIR_SEPARATOR (gcov_prefix[prefix_length - 1])) |
371 | prefix_length--; | |
372 | } | |
3ca48b3e L |
373 | else |
374 | prefix_length = 0; | |
b8698a0f | 375 | |
78e7dd6a KT |
376 | /* If no prefix was specified and a prefix stip, then we assume |
377 | relative. */ | |
378 | if (gcov_prefix_strip != 0 && prefix_length == 0) | |
379 | { | |
380 | gcov_prefix = "."; | |
381 | prefix_length = 1; | |
382 | } | |
383 | /* Allocate and initialize the filename scratch space plus one. */ | |
384 | gi_filename = (char *) alloca (prefix_length + gcov_max_filename + 2); | |
992f396f GZ |
385 | if (prefix_length) |
386 | memcpy (gi_filename, gcov_prefix, prefix_length); | |
387 | gi_filename_up = gi_filename + prefix_length; | |
b8698a0f | 388 | |
f9da5064 | 389 | /* Now merge each file. */ |
cdb23767 | 390 | for (gi_ptr = gcov_list; gi_ptr; gi_ptr = gi_ptr->next) |
23af32e6 | 391 | { |
5366b186 NS |
392 | unsigned n_counts; |
393 | struct gcov_summary prg; /* summary for this object over all | |
394 | program. */ | |
395 | struct gcov_ctr_summary *cs_prg, *cs_tprg, *cs_all; | |
7d63a2fa | 396 | int error = 0; |
9b514d25 | 397 | gcov_unsigned_t tag, length; |
7d63a2fa | 398 | gcov_position_t summary_pos = 0; |
00cf2913 | 399 | gcov_position_t eof_pos = 0; |
78e7dd6a | 400 | const char *fname, *s; |
5366b186 NS |
401 | struct gcov_fn_buffer *fn_buffer = 0; |
402 | struct gcov_fn_buffer **fn_tail = &fn_buffer; | |
78e7dd6a KT |
403 | |
404 | fname = gi_ptr->filename; | |
cdb23767 | 405 | |
78e7dd6a KT |
406 | /* Avoid to add multiple drive letters into combined path. */ |
407 | if (prefix_length != 0 && HAS_DRIVE_SPEC(fname)) | |
408 | fname += 2; | |
409 | ||
b8698a0f | 410 | /* Build relocated filename, stripping off leading |
992f396f GZ |
411 | directories from the initial filename if requested. */ |
412 | if (gcov_prefix_strip > 0) | |
413 | { | |
414 | int level = 0; | |
78e7dd6a KT |
415 | s = fname; |
416 | if (IS_DIR_SEPARATOR(*s)) | |
417 | ++s; | |
992f396f GZ |
418 | |
419 | /* Skip selected directory levels. */ | |
78e7dd6a | 420 | for (; (*s != '\0') && (level < gcov_prefix_strip); s++) |
992f396f GZ |
421 | if (IS_DIR_SEPARATOR(*s)) |
422 | { | |
423 | fname = s; | |
424 | level++; | |
78e7dd6a | 425 | } |
992f396f | 426 | } |
5366b186 | 427 | |
78e7dd6a | 428 | /* Update complete filename with stripped original. */ |
9f47a24e MT |
429 | if (prefix_length != 0 && !IS_DIR_SEPARATOR (*fname)) |
430 | { | |
431 | /* If prefix is given, add directory separator. */ | |
78e7dd6a KT |
432 | strcpy (gi_filename_up, "/"); |
433 | strcpy (gi_filename_up + 1, fname); | |
434 | } | |
992f396f | 435 | else |
78e7dd6a | 436 | strcpy (gi_filename_up, fname); |
992f396f | 437 | |
992f396f | 438 | if (!gcov_open (gi_filename)) |
23af32e6 | 439 | { |
992f396f GZ |
440 | /* Open failed likely due to missed directory. |
441 | Create directory and retry to open file. */ | |
442 | if (create_file_directory (gi_filename)) | |
443 | { | |
444 | fprintf (stderr, "profiling:%s:Skip\n", gi_filename); | |
445 | continue; | |
446 | } | |
447 | if (!gcov_open (gi_filename)) | |
448 | { | |
449 | fprintf (stderr, "profiling:%s:Cannot open\n", gi_filename); | |
450 | continue; | |
451 | } | |
23af32e6 | 452 | } |
160e2e4f NS |
453 | |
454 | tag = gcov_read_unsigned (); | |
455 | if (tag) | |
23af32e6 NS |
456 | { |
457 | /* Merge data from file. */ | |
160e2e4f | 458 | if (tag != GCOV_DATA_MAGIC) |
23af32e6 NS |
459 | { |
460 | fprintf (stderr, "profiling:%s:Not a gcov data file\n", | |
992f396f | 461 | gi_filename); |
00cf2913 | 462 | goto read_fatal; |
23af32e6 | 463 | } |
94de45d9 | 464 | length = gcov_read_unsigned (); |
992f396f | 465 | if (!gcov_version (gi_ptr, length, gi_filename)) |
160e2e4f | 466 | goto read_fatal; |
dd486eb2 NS |
467 | |
468 | length = gcov_read_unsigned (); | |
469 | if (length != gi_ptr->stamp) | |
00cf2913 NS |
470 | /* Read from a different compilation. Overwrite the file. */ |
471 | goto rewrite; | |
b8698a0f | 472 | |
5366b186 | 473 | /* Look for program summary. */ |
04dbc287 | 474 | for (f_ix = 0;;) |
23af32e6 | 475 | { |
5366b186 NS |
476 | struct gcov_summary tmp; |
477 | ||
478 | eof_pos = gcov_position (); | |
94de45d9 | 479 | tag = gcov_read_unsigned (); |
5366b186 NS |
480 | if (tag != GCOV_TAG_PROGRAM_SUMMARY) |
481 | break; | |
482 | ||
04dbc287 | 483 | f_ix--; |
5366b186 NS |
484 | length = gcov_read_unsigned (); |
485 | if (length != GCOV_TAG_SUMMARY_LENGTH) | |
486 | goto read_mismatch; | |
487 | gcov_read_summary (&tmp); | |
488 | if ((error = gcov_is_error ())) | |
489 | goto read_error; | |
04dbc287 NS |
490 | if (summary_pos || tmp.checksum != crc32) |
491 | goto next_summary; | |
492 | ||
493 | for (t_ix = 0; t_ix != GCOV_COUNTERS_SUMMABLE; t_ix++) | |
494 | if (tmp.ctrs[t_ix].num != this_prg.ctrs[t_ix].num) | |
495 | goto next_summary; | |
496 | prg = tmp; | |
497 | summary_pos = eof_pos; | |
498 | ||
499 | next_summary:; | |
5366b186 NS |
500 | } |
501 | ||
502 | /* Merge execution counts for each function. */ | |
04dbc287 | 503 | for (f_ix = 0; (unsigned)f_ix != gi_ptr->n_functions; |
5366b186 NS |
504 | f_ix++, tag = gcov_read_unsigned ()) |
505 | { | |
506 | gfi_ptr = gi_ptr->functions[f_ix]; | |
507 | ||
508 | if (tag != GCOV_TAG_FUNCTION) | |
509 | goto read_mismatch; | |
23af32e6 | 510 | |
04dbc287 | 511 | length = gcov_read_unsigned (); |
5366b186 NS |
512 | if (!length) |
513 | /* This function did not appear in the other program. | |
514 | We have nothing to merge. */ | |
515 | continue; | |
516 | ||
517 | if (length != GCOV_TAG_FUNCTION_LENGTH) | |
518 | goto read_mismatch; | |
519 | ||
520 | if (!gfi_ptr || gfi_ptr->key != gi_ptr) | |
23af32e6 | 521 | { |
5366b186 NS |
522 | /* This function appears in the other program. We |
523 | need to buffer the information in order to write | |
524 | it back out -- we'll be inserting data before | |
525 | this point, so cannot simply keep the data in the | |
526 | file. */ | |
04dbc287 NS |
527 | fn_tail = buffer_fn_data (gi_filename, |
528 | gi_ptr, fn_tail, f_ix); | |
5366b186 NS |
529 | if (!fn_tail) |
530 | goto read_mismatch; | |
531 | continue; | |
23af32e6 | 532 | } |
cb9e4555 | 533 | |
04dbc287 NS |
534 | length = gcov_read_unsigned (); |
535 | if (length != gfi_ptr->ident) | |
536 | goto read_mismatch; | |
537 | ||
538 | length = gcov_read_unsigned (); | |
539 | if (length != gfi_ptr->lineno_checksum) | |
540 | goto read_mismatch; | |
541 | ||
542 | length = gcov_read_unsigned (); | |
543 | if (length != gfi_ptr->cfg_checksum) | |
5366b186 NS |
544 | goto read_mismatch; |
545 | ||
546 | ci_ptr = gfi_ptr->ctrs; | |
50612a04 ZD |
547 | for (t_ix = 0; t_ix < GCOV_COUNTERS; t_ix++) |
548 | { | |
5366b186 | 549 | gcov_merge_fn merge = gi_ptr->merge[t_ix]; |
50612a04 | 550 | |
5366b186 | 551 | if (!merge) |
50612a04 | 552 | continue; |
b8698a0f | 553 | |
50612a04 ZD |
554 | tag = gcov_read_unsigned (); |
555 | length = gcov_read_unsigned (); | |
556 | if (tag != GCOV_TAG_FOR_COUNTER (t_ix) | |
5366b186 | 557 | || length != GCOV_TAG_COUNTER_LENGTH (ci_ptr->num)) |
50612a04 | 558 | goto read_mismatch; |
5366b186 NS |
559 | (*merge) (ci_ptr->values, ci_ptr->num); |
560 | ci_ptr++; | |
cb9e4555 | 561 | } |
94de45d9 NS |
562 | if ((error = gcov_is_error ())) |
563 | goto read_error; | |
23af32e6 NS |
564 | } |
565 | ||
5366b186 | 566 | if (tag) |
23af32e6 | 567 | { |
5366b186 | 568 | read_mismatch:; |
04dbc287 NS |
569 | fprintf (stderr, "profiling:%s:Merge mismatch for %s %u\n", |
570 | gi_filename, f_ix >= 0 ? "function" : "summary", | |
571 | f_ix < 0 ? -1 - f_ix : f_ix); | |
5366b186 | 572 | goto read_fatal; |
23af32e6 | 573 | } |
23af32e6 | 574 | } |
00cf2913 | 575 | goto rewrite; |
b8698a0f | 576 | |
00cf2913 | 577 | read_error:; |
5366b186 NS |
578 | fprintf (stderr, "profiling:%s:%s merging\n", gi_filename, |
579 | error < 0 ? "Overflow": "Error"); | |
b8698a0f | 580 | |
04dbc287 | 581 | goto read_fatal; |
00cf2913 | 582 | |
160e2e4f NS |
583 | rewrite:; |
584 | gcov_rewrite (); | |
7d63a2fa | 585 | if (!summary_pos) |
5366b186 NS |
586 | { |
587 | memset (&prg, 0, sizeof (prg)); | |
588 | summary_pos = eof_pos; | |
589 | } | |
23af32e6 | 590 | |
cdb23767 | 591 | /* Merge the summaries. */ |
50612a04 | 592 | for (t_ix = 0; t_ix < GCOV_COUNTERS_SUMMABLE; t_ix++) |
cdb23767 | 593 | { |
5366b186 NS |
594 | cs_prg = &prg.ctrs[t_ix]; |
595 | cs_tprg = &this_prg.ctrs[t_ix]; | |
596 | cs_all = &all_prg.ctrs[t_ix]; | |
50612a04 | 597 | |
5366b186 | 598 | if (gi_ptr->merge[t_ix]) |
cdb23767 | 599 | { |
cdb23767 NS |
600 | if (!cs_prg->runs++) |
601 | cs_prg->num = cs_tprg->num; | |
cdb23767 NS |
602 | cs_prg->sum_all += cs_tprg->sum_all; |
603 | if (cs_prg->run_max < cs_tprg->run_max) | |
604 | cs_prg->run_max = cs_tprg->run_max; | |
605 | cs_prg->sum_max += cs_tprg->run_max; | |
cdb23767 | 606 | } |
5366b186 | 607 | else if (cs_prg->runs) |
cdb23767 | 608 | goto read_mismatch; |
b8698a0f | 609 | |
cdb23767 NS |
610 | if (!cs_all->runs && cs_prg->runs) |
611 | memcpy (cs_all, cs_prg, sizeof (*cs_all)); | |
5366b186 | 612 | else if (!all_prg.checksum |
cdb23767 NS |
613 | && (!GCOV_LOCKED || cs_all->runs == cs_prg->runs) |
614 | && memcmp (cs_all, cs_prg, sizeof (*cs_all))) | |
615 | { | |
5366b186 | 616 | fprintf (stderr, "profiling:%s:Invocation mismatch - some data files may have been removed%s\n", |
992f396f | 617 | gi_filename, GCOV_LOCKED |
5366b186 NS |
618 | ? "" : " or concurrently updated without locking support"); |
619 | all_prg.checksum = ~0u; | |
cdb23767 NS |
620 | } |
621 | } | |
b8698a0f | 622 | |
04dbc287 | 623 | prg.checksum = crc32; |
b8698a0f | 624 | |
23af32e6 | 625 | /* Write out the data. */ |
5366b186 NS |
626 | if (!eof_pos) |
627 | { | |
628 | gcov_write_tag_length (GCOV_DATA_MAGIC, GCOV_VERSION); | |
629 | gcov_write_unsigned (gi_ptr->stamp); | |
630 | } | |
631 | ||
632 | if (summary_pos) | |
633 | gcov_seek (summary_pos); | |
634 | ||
635 | /* Generate whole program statistics. */ | |
636 | gcov_write_summary (GCOV_TAG_PROGRAM_SUMMARY, &prg); | |
637 | ||
638 | if (summary_pos < eof_pos) | |
639 | gcov_seek (eof_pos); | |
b8698a0f | 640 | |
23af32e6 | 641 | /* Write execution counts for each function. */ |
04dbc287 | 642 | for (f_ix = 0; (unsigned)f_ix != gi_ptr->n_functions; f_ix++) |
23af32e6 | 643 | { |
5366b186 | 644 | unsigned buffered = 0; |
50612a04 | 645 | |
04dbc287 | 646 | if (fn_buffer && fn_buffer->fn_ix == (unsigned)f_ix) |
5366b186 NS |
647 | { |
648 | /* Buffered data from another program. */ | |
649 | buffered = 1; | |
650 | gfi_ptr = &fn_buffer->info; | |
651 | length = GCOV_TAG_FUNCTION_LENGTH; | |
652 | } | |
653 | else | |
654 | { | |
655 | gfi_ptr = gi_ptr->functions[f_ix]; | |
656 | if (gfi_ptr && gfi_ptr->key == gi_ptr) | |
657 | length = GCOV_TAG_FUNCTION_LENGTH; | |
658 | else | |
659 | length = 0; | |
660 | } | |
661 | ||
662 | gcov_write_tag_length (GCOV_TAG_FUNCTION, length); | |
663 | if (!length) | |
664 | continue; | |
665 | ||
666 | gcov_write_unsigned (gfi_ptr->ident); | |
667 | gcov_write_unsigned (gfi_ptr->lineno_checksum); | |
668 | gcov_write_unsigned (gfi_ptr->cfg_checksum); | |
cb9e4555 | 669 | |
5366b186 | 670 | ci_ptr = gfi_ptr->ctrs; |
50612a04 ZD |
671 | for (t_ix = 0; t_ix < GCOV_COUNTERS; t_ix++) |
672 | { | |
5366b186 | 673 | if (!gi_ptr->merge[t_ix]) |
50612a04 ZD |
674 | continue; |
675 | ||
5366b186 | 676 | n_counts = ci_ptr->num; |
50612a04 ZD |
677 | gcov_write_tag_length (GCOV_TAG_FOR_COUNTER (t_ix), |
678 | GCOV_TAG_COUNTER_LENGTH (n_counts)); | |
5366b186 | 679 | gcov_type *c_ptr = ci_ptr->values; |
50612a04 ZD |
680 | while (n_counts--) |
681 | gcov_write_counter (*c_ptr++); | |
5366b186 NS |
682 | ci_ptr++; |
683 | } | |
684 | if (buffered) | |
04dbc287 | 685 | fn_buffer = free_fn_data (gi_ptr, fn_buffer, GCOV_COUNTERS); |
23af32e6 NS |
686 | } |
687 | ||
5366b186 | 688 | gcov_write_unsigned (0); |
04dbc287 NS |
689 | |
690 | read_fatal:; | |
691 | while (fn_buffer) | |
692 | fn_buffer = free_fn_data (gi_ptr, fn_buffer, GCOV_COUNTERS); | |
693 | ||
cdb23767 | 694 | if ((error = gcov_close ())) |
cdb23767 NS |
695 | fprintf (stderr, error < 0 ? |
696 | "profiling:%s:Overflow writing\n" : | |
697 | "profiling:%s:Error writing\n", | |
992f396f | 698 | gi_filename); |
23af32e6 | 699 | } |
23af32e6 NS |
700 | } |
701 | ||
4e8ee9cb TJ |
702 | /* Reset all counters to zero. */ |
703 | ||
704 | void | |
705 | gcov_clear (void) | |
706 | { | |
707 | const struct gcov_info *gi_ptr; | |
708 | ||
709 | for (gi_ptr = gcov_list; gi_ptr; gi_ptr = gi_ptr->next) | |
710 | { | |
711 | unsigned f_ix; | |
712 | ||
713 | for (f_ix = 0; f_ix < gi_ptr->n_functions; f_ix++) | |
714 | { | |
715 | unsigned t_ix; | |
716 | const struct gcov_fn_info *gfi_ptr = gi_ptr->functions[f_ix]; | |
717 | ||
718 | if (!gfi_ptr || gfi_ptr->key != gi_ptr) | |
719 | continue; | |
720 | const struct gcov_ctr_info *ci_ptr = gfi_ptr->ctrs; | |
721 | for (t_ix = 0; t_ix != GCOV_COUNTERS; t_ix++) | |
722 | { | |
723 | if (!gi_ptr->merge[t_ix]) | |
724 | continue; | |
725 | ||
726 | memset (ci_ptr->values, 0, sizeof (gcov_type) * ci_ptr->num); | |
727 | ci_ptr++; | |
728 | } | |
729 | } | |
730 | } | |
731 | } | |
732 | ||
23af32e6 NS |
733 | /* Add a new object file onto the bb chain. Invoked automatically |
734 | when running an object file's global ctors. */ | |
735 | ||
736 | void | |
737 | __gcov_init (struct gcov_info *info) | |
738 | { | |
2cd8b32c | 739 | if (!info->version || !info->n_functions) |
23af32e6 | 740 | return; |
992f396f | 741 | if (gcov_version (info, info->version, 0)) |
23af32e6 | 742 | { |
04dbc287 | 743 | size_t filename_length = strlen(info->filename); |
992f396f GZ |
744 | |
745 | /* Refresh the longest file name information */ | |
746 | if (filename_length > gcov_max_filename) | |
747 | gcov_max_filename = filename_length; | |
b8698a0f | 748 | |
23af32e6 NS |
749 | if (!gcov_list) |
750 | atexit (gcov_exit); | |
b8698a0f | 751 | |
23af32e6 NS |
752 | info->next = gcov_list; |
753 | gcov_list = info; | |
754 | } | |
755 | info->version = 0; | |
756 | } | |
757 | ||
33e3e24d RG |
758 | #ifdef __GTHREAD_MUTEX_INIT |
759 | ATTRIBUTE_HIDDEN __gthread_mutex_t __gcov_flush_mx = __GTHREAD_MUTEX_INIT; | |
760 | #define init_mx_once() | |
761 | #else | |
762 | __gthread_mutex_t __gcov_flush_mx ATTRIBUTE_HIDDEN; | |
763 | ||
764 | static void | |
765 | init_mx (void) | |
766 | { | |
b260a8c0 | 767 | __GTHREAD_MUTEX_INIT_FUNCTION (&__gcov_flush_mx); |
33e3e24d RG |
768 | } |
769 | static void | |
770 | init_mx_once (void) | |
771 | { | |
772 | static __gthread_once_t once = __GTHREAD_ONCE_INIT; | |
773 | __gthread_once (&once, init_mx); | |
774 | } | |
775 | #endif | |
776 | ||
23af32e6 NS |
777 | /* Called before fork or exec - write out profile information gathered so |
778 | far and reset it to zero. This avoids duplication or loss of the | |
779 | profile information gathered so far. */ | |
780 | ||
781 | void | |
782 | __gcov_flush (void) | |
783 | { | |
33e3e24d RG |
784 | init_mx_once (); |
785 | __gthread_mutex_lock (&__gcov_flush_mx); | |
786 | ||
23af32e6 | 787 | gcov_exit (); |
4e8ee9cb | 788 | gcov_clear (); |
33e3e24d RG |
789 | |
790 | __gthread_mutex_unlock (&__gcov_flush_mx); | |
23af32e6 | 791 | } |
01e60c33 | 792 | |
09780dfb ZD |
793 | #endif /* L_gcov */ |
794 | ||
4e8ee9cb TJ |
795 | #ifdef L_gcov_reset |
796 | ||
797 | /* Function that can be called from application to reset counters to zero, | |
798 | in order to collect profile in region of interest. */ | |
799 | ||
800 | void | |
801 | __gcov_reset (void) | |
802 | { | |
803 | gcov_clear (); | |
804 | /* Re-enable dumping to support collecting profile in multiple regions | |
805 | of interest. */ | |
806 | gcov_dump_complete = 0; | |
807 | } | |
808 | ||
809 | #endif /* L_gcov_reset */ | |
810 | ||
811 | #ifdef L_gcov_dump | |
812 | ||
813 | /* Function that can be called from application to write profile collected | |
814 | so far, in order to collect profile in region of interest. */ | |
815 | ||
816 | void | |
817 | __gcov_dump (void) | |
818 | { | |
819 | gcov_exit (); | |
820 | /* Prevent profile from being dumped a second time on application exit. */ | |
821 | gcov_dump_complete = 1; | |
822 | } | |
823 | ||
824 | #endif /* L_gcov_dump */ | |
825 | ||
09780dfb ZD |
826 | #ifdef L_gcov_merge_add |
827 | /* The profile merging function that just adds the counters. It is given | |
828 | an array COUNTERS of N_COUNTERS old counters and it reads the same number | |
829 | of counters from the gcov file. */ | |
830 | void | |
9b514d25 | 831 | __gcov_merge_add (gcov_type *counters, unsigned n_counters) |
09780dfb ZD |
832 | { |
833 | for (; n_counters; counters++, n_counters--) | |
834 | *counters += gcov_read_counter (); | |
835 | } | |
836 | #endif /* L_gcov_merge_add */ | |
837 | ||
079a182e JH |
838 | #ifdef L_gcov_merge_ior |
839 | /* The profile merging function that just adds the counters. It is given | |
840 | an array COUNTERS of N_COUNTERS old counters and it reads the same number | |
841 | of counters from the gcov file. */ | |
842 | void | |
843 | __gcov_merge_ior (gcov_type *counters, unsigned n_counters) | |
844 | { | |
845 | for (; n_counters; counters++, n_counters--) | |
846 | *counters |= gcov_read_counter (); | |
847 | } | |
848 | #endif | |
849 | ||
af166e5d | 850 | #ifdef L_gcov_merge_single |
330d2e2a NS |
851 | /* The profile merging function for choosing the most common value. |
852 | It is given an array COUNTERS of N_COUNTERS old counters and it | |
853 | reads the same number of counters from the gcov file. The counters | |
854 | are split into 3-tuples where the members of the tuple have | |
855 | meanings: | |
b8698a0f | 856 | |
af166e5d ZD |
857 | -- the stored candidate on the most common value of the measured entity |
858 | -- counter | |
859 | -- total number of evaluations of the value */ | |
860 | void | |
861 | __gcov_merge_single (gcov_type *counters, unsigned n_counters) | |
862 | { | |
863 | unsigned i, n_measures; | |
864 | gcov_type value, counter, all; | |
865 | ||
cccd217d | 866 | gcc_assert (!(n_counters % 3)); |
af166e5d ZD |
867 | n_measures = n_counters / 3; |
868 | for (i = 0; i < n_measures; i++, counters += 3) | |
869 | { | |
870 | value = gcov_read_counter (); | |
871 | counter = gcov_read_counter (); | |
872 | all = gcov_read_counter (); | |
873 | ||
874 | if (counters[0] == value) | |
875 | counters[1] += counter; | |
876 | else if (counter > counters[1]) | |
877 | { | |
878 | counters[0] = value; | |
879 | counters[1] = counter - counters[1]; | |
880 | } | |
881 | else | |
882 | counters[1] -= counter; | |
883 | counters[2] += all; | |
884 | } | |
885 | } | |
886 | #endif /* L_gcov_merge_single */ | |
887 | ||
888 | #ifdef L_gcov_merge_delta | |
330d2e2a NS |
889 | /* The profile merging function for choosing the most common |
890 | difference between two consecutive evaluations of the value. It is | |
891 | given an array COUNTERS of N_COUNTERS old counters and it reads the | |
892 | same number of counters from the gcov file. The counters are split | |
893 | into 4-tuples where the members of the tuple have meanings: | |
b8698a0f | 894 | |
af166e5d ZD |
895 | -- the last value of the measured entity |
896 | -- the stored candidate on the most common difference | |
897 | -- counter | |
898 | -- total number of evaluations of the value */ | |
899 | void | |
900 | __gcov_merge_delta (gcov_type *counters, unsigned n_counters) | |
901 | { | |
902 | unsigned i, n_measures; | |
0f900dfa | 903 | gcov_type value, counter, all; |
af166e5d | 904 | |
cccd217d | 905 | gcc_assert (!(n_counters % 4)); |
af166e5d ZD |
906 | n_measures = n_counters / 4; |
907 | for (i = 0; i < n_measures; i++, counters += 4) | |
908 | { | |
0f900dfa | 909 | /* last = */ gcov_read_counter (); |
af166e5d ZD |
910 | value = gcov_read_counter (); |
911 | counter = gcov_read_counter (); | |
912 | all = gcov_read_counter (); | |
913 | ||
914 | if (counters[1] == value) | |
915 | counters[2] += counter; | |
916 | else if (counter > counters[2]) | |
917 | { | |
918 | counters[1] = value; | |
919 | counters[2] = counter - counters[2]; | |
920 | } | |
921 | else | |
922 | counters[2] -= counter; | |
923 | counters[3] += all; | |
924 | } | |
925 | } | |
926 | #endif /* L_gcov_merge_delta */ | |
927 | ||
9885da8e ZD |
928 | #ifdef L_gcov_interval_profiler |
929 | /* If VALUE is in interval <START, START + STEPS - 1>, then increases the | |
930 | corresponding counter in COUNTERS. If the VALUE is above or below | |
931 | the interval, COUNTERS[STEPS] or COUNTERS[STEPS + 1] is increased | |
932 | instead. */ | |
933 | ||
934 | void | |
935 | __gcov_interval_profiler (gcov_type *counters, gcov_type value, | |
936 | int start, unsigned steps) | |
937 | { | |
938 | gcov_type delta = value - start; | |
939 | if (delta < 0) | |
940 | counters[steps + 1]++; | |
941 | else if (delta >= steps) | |
942 | counters[steps]++; | |
943 | else | |
944 | counters[delta]++; | |
945 | } | |
946 | #endif | |
947 | ||
948 | #ifdef L_gcov_pow2_profiler | |
949 | /* If VALUE is a power of two, COUNTERS[1] is incremented. Otherwise | |
950 | COUNTERS[0] is incremented. */ | |
951 | ||
952 | void | |
953 | __gcov_pow2_profiler (gcov_type *counters, gcov_type value) | |
954 | { | |
955 | if (value & (value - 1)) | |
956 | counters[0]++; | |
957 | else | |
958 | counters[1]++; | |
959 | } | |
960 | #endif | |
961 | ||
9885da8e ZD |
962 | /* Tries to determine the most common value among its inputs. Checks if the |
963 | value stored in COUNTERS[0] matches VALUE. If this is the case, COUNTERS[1] | |
964 | is incremented. If this is not the case and COUNTERS[1] is not zero, | |
965 | COUNTERS[1] is decremented. Otherwise COUNTERS[1] is set to one and | |
966 | VALUE is stored to COUNTERS[0]. This algorithm guarantees that if this | |
967 | function is called more than 50% of the time with one value, this value | |
968 | will be in COUNTERS[0] in the end. | |
969 | ||
970 | In any case, COUNTERS[2] is incremented. */ | |
971 | ||
6bad2617 TB |
972 | static inline void |
973 | __gcov_one_value_profiler_body (gcov_type *counters, gcov_type value) | |
9885da8e ZD |
974 | { |
975 | if (value == counters[0]) | |
976 | counters[1]++; | |
977 | else if (counters[1] == 0) | |
978 | { | |
979 | counters[1] = 1; | |
980 | counters[0] = value; | |
981 | } | |
982 | else | |
983 | counters[1]--; | |
984 | counters[2]++; | |
985 | } | |
6bad2617 TB |
986 | |
987 | #ifdef L_gcov_one_value_profiler | |
988 | void | |
989 | __gcov_one_value_profiler (gcov_type *counters, gcov_type value) | |
990 | { | |
991 | __gcov_one_value_profiler_body (counters, value); | |
992 | } | |
993 | #endif | |
994 | ||
995 | #ifdef L_gcov_indirect_call_profiler | |
7894073c SE |
996 | |
997 | /* By default, the C++ compiler will use function addresses in the | |
998 | vtable entries. Setting TARGET_VTABLE_USES_DESCRIPTORS to nonzero | |
999 | tells the compiler to use function descriptors instead. The value | |
1000 | of this macro says how many words wide the descriptor is (normally 2), | |
1001 | but it may be dependent on target flags. Since we do not have access | |
1002 | to the target flags here we just check to see if it is set and use | |
1003 | that to set VTABLE_USES_DESCRIPTORS to 0 or 1. | |
1004 | ||
1005 | It is assumed that the address of a function descriptor may be treated | |
1006 | as a pointer to a function. */ | |
1007 | ||
1008 | #ifdef TARGET_VTABLE_USES_DESCRIPTORS | |
1009 | #define VTABLE_USES_DESCRIPTORS 1 | |
1010 | #else | |
1011 | #define VTABLE_USES_DESCRIPTORS 0 | |
1012 | #endif | |
1013 | ||
6bad2617 TB |
1014 | /* Tries to determine the most common value among its inputs. */ |
1015 | void | |
b8698a0f | 1016 | __gcov_indirect_call_profiler (gcov_type* counter, gcov_type value, |
6bad2617 TB |
1017 | void* cur_func, void* callee_func) |
1018 | { | |
81a39e89 SE |
1019 | /* If the C++ virtual tables contain function descriptors then one |
1020 | function may have multiple descriptors and we need to dereference | |
1021 | the descriptors to see if they point to the same function. */ | |
1022 | if (cur_func == callee_func | |
7894073c | 1023 | || (VTABLE_USES_DESCRIPTORS && callee_func |
81a39e89 | 1024 | && *(void **) cur_func == *(void **) callee_func)) |
6bad2617 TB |
1025 | __gcov_one_value_profiler_body (counter, value); |
1026 | } | |
9885da8e ZD |
1027 | #endif |
1028 | ||
079a182e JH |
1029 | |
1030 | #ifdef L_gcov_average_profiler | |
1031 | /* Increase corresponding COUNTER by VALUE. FIXME: Perhaps we want | |
1032 | to saturate up. */ | |
1033 | ||
1034 | void | |
1035 | __gcov_average_profiler (gcov_type *counters, gcov_type value) | |
1036 | { | |
1037 | counters[0] += value; | |
1038 | counters[1] ++; | |
1039 | } | |
1040 | #endif | |
1041 | ||
1042 | #ifdef L_gcov_ior_profiler | |
efbb59b2 | 1043 | /* Bitwise-OR VALUE into COUNTER. */ |
079a182e JH |
1044 | |
1045 | void | |
1046 | __gcov_ior_profiler (gcov_type *counters, gcov_type value) | |
1047 | { | |
1048 | *counters |= value; | |
1049 | } | |
1050 | #endif | |
1051 | ||
d1c38823 ZD |
1052 | #ifdef L_gcov_fork |
1053 | /* A wrapper for the fork function. Flushes the accumulated profiling data, so | |
1054 | that they are not counted twice. */ | |
1055 | ||
1056 | pid_t | |
1057 | __gcov_fork (void) | |
1058 | { | |
33e3e24d RG |
1059 | pid_t pid; |
1060 | extern __gthread_mutex_t __gcov_flush_mx; | |
d1c38823 | 1061 | __gcov_flush (); |
33e3e24d RG |
1062 | pid = fork (); |
1063 | if (pid == 0) | |
1064 | __GTHREAD_MUTEX_INIT_FUNCTION (&__gcov_flush_mx); | |
1065 | return pid; | |
d1c38823 ZD |
1066 | } |
1067 | #endif | |
1068 | ||
1069 | #ifdef L_gcov_execl | |
1070 | /* A wrapper for the execl function. Flushes the accumulated profiling data, so | |
1071 | that they are not lost. */ | |
1072 | ||
1073 | int | |
cbb8dee3 | 1074 | __gcov_execl (const char *path, char *arg, ...) |
d1c38823 ZD |
1075 | { |
1076 | va_list ap, aq; | |
1077 | unsigned i, length; | |
1078 | char **args; | |
1079 | ||
1080 | __gcov_flush (); | |
1081 | ||
1082 | va_start (ap, arg); | |
1083 | va_copy (aq, ap); | |
1084 | ||
1085 | length = 2; | |
1086 | while (va_arg (ap, char *)) | |
1087 | length++; | |
1088 | va_end (ap); | |
1089 | ||
858904db | 1090 | args = (char **) alloca (length * sizeof (void *)); |
cbb8dee3 | 1091 | args[0] = arg; |
d1c38823 ZD |
1092 | for (i = 1; i < length; i++) |
1093 | args[i] = va_arg (aq, char *); | |
1094 | va_end (aq); | |
1095 | ||
1096 | return execv (path, args); | |
1097 | } | |
1098 | #endif | |
1099 | ||
1100 | #ifdef L_gcov_execlp | |
1101 | /* A wrapper for the execlp function. Flushes the accumulated profiling data, so | |
1102 | that they are not lost. */ | |
1103 | ||
1104 | int | |
cbb8dee3 | 1105 | __gcov_execlp (const char *path, char *arg, ...) |
d1c38823 ZD |
1106 | { |
1107 | va_list ap, aq; | |
1108 | unsigned i, length; | |
1109 | char **args; | |
1110 | ||
1111 | __gcov_flush (); | |
1112 | ||
1113 | va_start (ap, arg); | |
1114 | va_copy (aq, ap); | |
1115 | ||
1116 | length = 2; | |
1117 | while (va_arg (ap, char *)) | |
1118 | length++; | |
1119 | va_end (ap); | |
1120 | ||
858904db | 1121 | args = (char **) alloca (length * sizeof (void *)); |
cbb8dee3 | 1122 | args[0] = arg; |
d1c38823 ZD |
1123 | for (i = 1; i < length; i++) |
1124 | args[i] = va_arg (aq, char *); | |
1125 | va_end (aq); | |
1126 | ||
1127 | return execvp (path, args); | |
1128 | } | |
1129 | #endif | |
1130 | ||
1131 | #ifdef L_gcov_execle | |
1132 | /* A wrapper for the execle function. Flushes the accumulated profiling data, so | |
1133 | that they are not lost. */ | |
1134 | ||
1135 | int | |
cbb8dee3 | 1136 | __gcov_execle (const char *path, char *arg, ...) |
d1c38823 ZD |
1137 | { |
1138 | va_list ap, aq; | |
1139 | unsigned i, length; | |
1140 | char **args; | |
1141 | char **envp; | |
1142 | ||
1143 | __gcov_flush (); | |
1144 | ||
1145 | va_start (ap, arg); | |
1146 | va_copy (aq, ap); | |
1147 | ||
1148 | length = 2; | |
1149 | while (va_arg (ap, char *)) | |
1150 | length++; | |
1151 | va_end (ap); | |
1152 | ||
858904db | 1153 | args = (char **) alloca (length * sizeof (void *)); |
cbb8dee3 | 1154 | args[0] = arg; |
d1c38823 ZD |
1155 | for (i = 1; i < length; i++) |
1156 | args[i] = va_arg (aq, char *); | |
1157 | envp = va_arg (aq, char **); | |
1158 | va_end (aq); | |
1159 | ||
1160 | return execve (path, args, envp); | |
1161 | } | |
1162 | #endif | |
1163 | ||
1164 | #ifdef L_gcov_execv | |
1165 | /* A wrapper for the execv function. Flushes the accumulated profiling data, so | |
1166 | that they are not lost. */ | |
1167 | ||
1168 | int | |
1169 | __gcov_execv (const char *path, char *const argv[]) | |
1170 | { | |
1171 | __gcov_flush (); | |
1172 | return execv (path, argv); | |
1173 | } | |
1174 | #endif | |
1175 | ||
1176 | #ifdef L_gcov_execvp | |
1177 | /* A wrapper for the execvp function. Flushes the accumulated profiling data, so | |
1178 | that they are not lost. */ | |
1179 | ||
1180 | int | |
1181 | __gcov_execvp (const char *path, char *const argv[]) | |
1182 | { | |
1183 | __gcov_flush (); | |
1184 | return execvp (path, argv); | |
1185 | } | |
1186 | #endif | |
1187 | ||
1188 | #ifdef L_gcov_execve | |
1189 | /* A wrapper for the execve function. Flushes the accumulated profiling data, so | |
1190 | that they are not lost. */ | |
1191 | ||
1192 | int | |
1193 | __gcov_execve (const char *path, char *const argv[], char *const envp[]) | |
1194 | { | |
1195 | __gcov_flush (); | |
1196 | return execve (path, argv, envp); | |
1197 | } | |
1198 | #endif | |
01e60c33 | 1199 | #endif /* inhibit_libc */ |