1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
|
/* Dump a gcov file, for debugging use.
Copyright (C) 2002-2020 Free Software Foundation, Inc.
Contributed by Nathan Sidwell <nathan@codesourcery.com>
Gcov is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
Gcov is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Gcov; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tm.h"
#include "version.h"
#include "intl.h"
#include "diagnostic.h"
#include <getopt.h>
#define IN_GCOV (-1)
#include "gcov-io.h"
#include "gcov-io.c"
static void dump_gcov_file (const char *);
static void print_prefix (const char *, unsigned, gcov_position_t);
static void print_usage (void);
static void print_version (void);
static void tag_function (const char *, unsigned, unsigned, unsigned);
static void tag_blocks (const char *, unsigned, unsigned, unsigned);
static void tag_arcs (const char *, unsigned, unsigned, unsigned);
static void tag_lines (const char *, unsigned, unsigned, unsigned);
static void tag_counters (const char *, unsigned, unsigned, unsigned);
static void tag_summary (const char *, unsigned, unsigned, unsigned);
extern int main (int, char **);
typedef struct tag_format
{
unsigned tag;
char const *name;
void (*proc) (const char *, unsigned, unsigned, unsigned);
} tag_format_t;
static int flag_dump_contents = 0;
static int flag_dump_positions = 0;
static int flag_dump_raw = 0;
static const struct option options[] =
{
{ "help", no_argument, NULL, 'h' },
{ "version", no_argument, NULL, 'v' },
{ "long", no_argument, NULL, 'l' },
{ "positions", no_argument, NULL, 'o' },
{ 0, 0, 0, 0 }
};
#define VALUE_PADDING_PREFIX " "
#define VALUE_PREFIX "%2d: "
static const tag_format_t tag_table[] =
{
{0, "NOP", NULL},
{0, "UNKNOWN", NULL},
{0, "COUNTERS", tag_counters},
{GCOV_TAG_FUNCTION, "FUNCTION", tag_function},
{GCOV_TAG_BLOCKS, "BLOCKS", tag_blocks},
{GCOV_TAG_ARCS, "ARCS", tag_arcs},
{GCOV_TAG_LINES, "LINES", tag_lines},
{GCOV_TAG_OBJECT_SUMMARY, "OBJECT_SUMMARY", tag_summary},
{0, NULL, NULL}
};
int
main (int argc ATTRIBUTE_UNUSED, char **argv)
{
int opt;
const char *p;
p = argv[0] + strlen (argv[0]);
while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
--p;
progname = p;
xmalloc_set_program_name (progname);
/* Unlock the stdio streams. */
unlock_std_streams ();
gcc_init_libintl ();
diagnostic_initialize (global_dc, 0);
while ((opt = getopt_long (argc, argv, "hlprvw", options, NULL)) != -1)
{
switch (opt)
{
case 'h':
print_usage ();
break;
case 'v':
print_version ();
break;
case 'l':
flag_dump_contents = 1;
break;
case 'p':
flag_dump_positions = 1;
break;
case 'r':
flag_dump_raw = 1;
break;
default:
fprintf (stderr, "unknown flag `%c'\n", opt);
}
}
while (argv[optind])
dump_gcov_file (argv[optind++]);
return 0;
}
static void
print_usage (void)
{
printf ("Usage: gcov-dump [OPTION] ... gcovfiles\n");
printf ("Print coverage file contents\n");
printf (" -h, --help Print this help\n");
printf (" -l, --long Dump record contents too\n");
printf (" -p, --positions Dump record positions\n");
printf (" -r, --raw Print content records in raw format\n");
printf (" -v, --version Print version number\n");
printf ("\nFor bug reporting instructions, please see:\n%s.\n",
bug_report_url);
}
static void
print_version (void)
{
printf ("gcov-dump %s%s\n", pkgversion_string, version_string);
printf ("Copyright (C) 2020 Free Software Foundation, Inc.\n");
printf ("This is free software; see the source for copying conditions. There is NO\n\
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n");
}
static void
print_prefix (const char *filename, unsigned depth, gcov_position_t position)
{
static const char prefix[] = " ";
printf ("%s:", filename);
if (flag_dump_positions)
printf ("%5lu:", (unsigned long) position);
printf ("%.*s", (int) 2 * depth, prefix);
}
static void
dump_gcov_file (const char *filename)
{
unsigned tags[4];
unsigned depth = 0;
bool is_data_type;
if (!gcov_open (filename, 1))
{
fprintf (stderr, "%s:cannot open\n", filename);
return;
}
/* magic */
{
unsigned magic = gcov_read_unsigned ();
unsigned version;
int endianness = 0;
char m[4], v[4];
if ((endianness = gcov_magic (magic, GCOV_DATA_MAGIC)))
is_data_type = true;
else if ((endianness = gcov_magic (magic, GCOV_NOTE_MAGIC)))
is_data_type = false;
else
{
printf ("%s:not a gcov file\n", filename);
gcov_close ();
return;
}
version = gcov_read_unsigned ();
GCOV_UNSIGNED2STRING (v, version);
GCOV_UNSIGNED2STRING (m, magic);
printf ("%s:%s:magic `%.4s':version `%.4s'%s\n", filename,
is_data_type ? "data" : "note",
m, v, endianness < 0 ? " (swapped endianness)" : "");
if (version != GCOV_VERSION)
{
char e[4];
GCOV_UNSIGNED2STRING (e, GCOV_VERSION);
printf ("%s:warning:current version is `%.4s'\n", filename, e);
}
}
/* stamp */
{
unsigned stamp = gcov_read_unsigned ();
printf ("%s:stamp %lu\n", filename, (unsigned long)stamp);
}
if (!is_data_type)
{
printf ("%s:cwd: %s\n", filename, gcov_read_string ());
/* Support for unexecuted basic blocks. */
unsigned support_unexecuted_blocks = gcov_read_unsigned ();
if (!support_unexecuted_blocks)
printf ("%s: has_unexecuted_block is not supported\n", filename);
}
while (1)
{
gcov_position_t base, position = gcov_position ();
unsigned tag, length;
tag_format_t const *format;
unsigned tag_depth;
int error;
unsigned mask;
tag = gcov_read_unsigned ();
if (!tag)
break;
length = gcov_read_unsigned ();
base = gcov_position ();
mask = GCOV_TAG_MASK (tag) >> 1;
for (tag_depth = 4; mask; mask >>= 8)
{
if ((mask & 0xff) != 0xff)
{
printf ("%s:tag `%08x' is invalid\n", filename, tag);
break;
}
tag_depth--;
}
for (format = tag_table; format->name; format++)
if (format->tag == tag)
goto found;
format = &tag_table[GCOV_TAG_IS_COUNTER (tag) ? 2 : 1];
found:;
if (tag)
{
if (depth && depth < tag_depth)
{
if (!GCOV_TAG_IS_SUBTAG (tags[depth - 1], tag))
printf ("%s:tag `%08x' is incorrectly nested\n",
filename, tag);
}
depth = tag_depth;
tags[depth - 1] = tag;
}
print_prefix (filename, tag_depth, position);
printf ("%08x:%4u:%s", tag, length, format->name);
if (format->proc)
(*format->proc) (filename, tag, length, depth);
printf ("\n");
if (flag_dump_contents && format->proc)
{
unsigned long actual_length = gcov_position () - base;
if (actual_length > length)
printf ("%s:record size mismatch %lu bytes overread\n",
filename, actual_length - length);
else if (length > actual_length)
printf ("%s:record size mismatch %lu bytes unread\n",
filename, length - actual_length);
}
gcov_sync (base, length);
if ((error = gcov_is_error ()))
{
printf (error < 0 ? "%s:counter overflow at %lu\n" :
"%s:read error at %lu\n", filename,
(long unsigned) gcov_position ());
break;
}
}
gcov_close ();
}
static void
tag_function (const char *filename ATTRIBUTE_UNUSED,
unsigned tag ATTRIBUTE_UNUSED, unsigned length,
unsigned depth ATTRIBUTE_UNUSED)
{
unsigned long pos = gcov_position ();
if (!length)
printf (" placeholder");
else
{
printf (" ident=%u", gcov_read_unsigned ());
printf (", lineno_checksum=0x%08x", gcov_read_unsigned ());
printf (", cfg_checksum=0x%08x", gcov_read_unsigned ());
if (gcov_position () - pos < length)
{
const char *name;
name = gcov_read_string ();
printf (", `%s'", name ? name : "NULL");
unsigned artificial = gcov_read_unsigned ();
name = gcov_read_string ();
printf (" %s", name ? name : "NULL");
unsigned line_start = gcov_read_unsigned ();
unsigned column_start = gcov_read_unsigned ();
unsigned line_end = gcov_read_unsigned ();
unsigned column_end = gcov_read_unsigned ();
printf (":%u:%u-%u:%u", line_start, column_start,
line_end, column_end);
if (artificial)
printf (", artificial");
}
}
}
static void
tag_blocks (const char *filename ATTRIBUTE_UNUSED,
unsigned tag ATTRIBUTE_UNUSED, unsigned length ATTRIBUTE_UNUSED,
unsigned depth ATTRIBUTE_UNUSED)
{
printf (" %u blocks", gcov_read_unsigned ());
}
static void
tag_arcs (const char *filename ATTRIBUTE_UNUSED,
unsigned tag ATTRIBUTE_UNUSED, unsigned length ATTRIBUTE_UNUSED,
unsigned depth)
{
unsigned n_arcs = GCOV_TAG_ARCS_NUM (length);
printf (" %u arcs", n_arcs);
if (flag_dump_contents)
{
unsigned ix;
unsigned blockno = gcov_read_unsigned ();
for (ix = 0; ix != n_arcs; ix++)
{
unsigned dst, flags;
if (!(ix & 3))
{
printf ("\n");
print_prefix (filename, depth, gcov_position ());
printf (VALUE_PADDING_PREFIX "block %u:", blockno);
}
dst = gcov_read_unsigned ();
flags = gcov_read_unsigned ();
printf (" %u:%04x", dst, flags);
if (flags)
{
char c = '(';
if (flags & GCOV_ARC_ON_TREE)
printf ("%ctree", c), c = ',';
if (flags & GCOV_ARC_FAKE)
printf ("%cfake", c), c = ',';
if (flags & GCOV_ARC_FALLTHROUGH)
printf ("%cfall", c), c = ',';
printf (")");
}
}
}
}
static void
tag_lines (const char *filename ATTRIBUTE_UNUSED,
unsigned tag ATTRIBUTE_UNUSED, unsigned length ATTRIBUTE_UNUSED,
unsigned depth)
{
if (flag_dump_contents)
{
unsigned blockno = gcov_read_unsigned ();
char const *sep = NULL;
while (1)
{
gcov_position_t position = gcov_position ();
const char *source = NULL;
unsigned lineno = gcov_read_unsigned ();
if (!lineno)
{
source = gcov_read_string ();
if (!source)
break;
sep = NULL;
}
if (!sep)
{
printf ("\n");
print_prefix (filename, depth, position);
printf (VALUE_PADDING_PREFIX "block %u:", blockno);
sep = "";
}
if (lineno)
{
printf ("%s%u", sep, lineno);
sep = ", ";
}
else
{
printf ("%s`%s'", sep, source);
sep = ":";
}
}
}
}
static void
tag_counters (const char *filename ATTRIBUTE_UNUSED,
unsigned tag ATTRIBUTE_UNUSED, unsigned length ATTRIBUTE_UNUSED,
unsigned depth)
{
#define DEF_GCOV_COUNTER(COUNTER, NAME, MERGE_FN) NAME,
static const char *const counter_names[] = {
#include "gcov-counter.def"
};
#undef DEF_GCOV_COUNTER
unsigned n_counts = GCOV_TAG_COUNTER_NUM (length);
printf (" %s %u counts",
counter_names[GCOV_COUNTER_FOR_TAG (tag)], n_counts);
if (flag_dump_contents)
{
unsigned ix;
for (ix = 0; ix != n_counts; ix++)
{
gcov_type count;
if (flag_dump_raw)
{
if (ix == 0)
printf (": ");
}
else if (!(ix & 7))
{
printf ("\n");
print_prefix (filename, depth, gcov_position ());
printf (VALUE_PADDING_PREFIX VALUE_PREFIX, ix);
}
count = gcov_read_counter ();
printf ("%" PRId64 " ", count);
}
}
}
static void
tag_summary (const char *filename ATTRIBUTE_UNUSED,
unsigned tag ATTRIBUTE_UNUSED, unsigned length ATTRIBUTE_UNUSED,
unsigned depth ATTRIBUTE_UNUSED)
{
gcov_summary summary;
gcov_read_summary (&summary);
printf (" runs=%d, sum_max=%" PRId64,
summary.runs, summary.sum_max);
}
|