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805e22b2 1/* Dump a gcov file, for debugging use.
8c4c00c1 2 Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
805e22b2 3 Contributed by Nathan Sidwell <nathan@codesourcery.com>
4
5Gcov is free software; you can redistribute it and/or modify
6it under the terms of the GNU General Public License as published by
8c4c00c1 7the Free Software Foundation; either version 3, or (at your option)
805e22b2 8any later version.
9
10Gcov is distributed in the hope that it will be useful,
11but WITHOUT ANY WARRANTY; without even the implied warranty of
12MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13GNU General Public License for more details.
14
15You should have received a copy of the GNU General Public License
8c4c00c1 16along with Gcov; see the file COPYING3. If not see
17<http://www.gnu.org/licenses/>. */
805e22b2 18
19#include "config.h"
20#include "system.h"
21#include "coretypes.h"
22#include "tm.h"
23#include "version.h"
24#include <getopt.h>
9219dd0a 25#define IN_GCOV (-1)
805e22b2 26#include "gcov-io.h"
44359ced 27#include "gcov-io.c"
805e22b2 28
952f0048 29static void dump_file (const char *);
30static void print_prefix (const char *, unsigned, gcov_position_t);
31static void print_usage (void);
32static void print_version (void);
33static void tag_function (const char *, unsigned, unsigned);
34static void tag_blocks (const char *, unsigned, unsigned);
35static void tag_arcs (const char *, unsigned, unsigned);
36static void tag_lines (const char *, unsigned, unsigned);
37static void tag_counters (const char *, unsigned, unsigned);
38static void tag_summary (const char *, unsigned, unsigned);
39extern int main (int, char **);
805e22b2 40
41typedef struct tag_format
42{
43 unsigned tag;
44 char const *name;
f187042d 45 void (*proc) (const char *, unsigned, unsigned);
805e22b2 46} tag_format_t;
47
48static int flag_dump_contents = 0;
80abd9e4 49static int flag_dump_positions = 0;
805e22b2 50
51static const struct option options[] =
52{
53 { "help", no_argument, NULL, 'h' },
54 { "version", no_argument, NULL, 'v' },
55 { "long", no_argument, NULL, 'l' },
80abd9e4 56 { "positions", no_argument, NULL, 'o' },
4eb7b61f 57 { 0, 0, 0, 0 }
805e22b2 58};
59
fd956ee4 60static const tag_format_t tag_table[] =
805e22b2 61{
62 {0, "NOP", NULL},
63 {0, "UNKNOWN", NULL},
ab6a34f2 64 {0, "COUNTERS", tag_counters},
805e22b2 65 {GCOV_TAG_FUNCTION, "FUNCTION", tag_function},
66 {GCOV_TAG_BLOCKS, "BLOCKS", tag_blocks},
67 {GCOV_TAG_ARCS, "ARCS", tag_arcs},
68 {GCOV_TAG_LINES, "LINES", tag_lines},
805e22b2 69 {GCOV_TAG_OBJECT_SUMMARY, "OBJECT_SUMMARY", tag_summary},
70 {GCOV_TAG_PROGRAM_SUMMARY, "PROGRAM_SUMMARY", tag_summary},
805e22b2 71 {0, NULL, NULL}
72};
73
952f0048 74int
75main (int argc ATTRIBUTE_UNUSED, char **argv)
805e22b2 76{
77 int opt;
78
4367c81f 79 /* Unlock the stdio streams. */
9c8f076b 80 unlock_std_streams ();
4367c81f 81
80abd9e4 82 while ((opt = getopt_long (argc, argv, "hlpv", options, NULL)) != -1)
805e22b2 83 {
84 switch (opt)
85 {
86 case 'h':
87 print_usage ();
88 break;
89 case 'v':
90 print_version ();
91 break;
92 case 'l':
93 flag_dump_contents = 1;
94 break;
80abd9e4 95 case 'p':
96 flag_dump_positions = 1;
97 break;
805e22b2 98 default:
99 fprintf (stderr, "unknown flag `%c'\n", opt);
100 }
101 }
952f0048 102
805e22b2 103 while (argv[optind])
104 dump_file (argv[optind++]);
105 return 0;
106}
107
108static void
952f0048 109print_usage (void)
805e22b2 110{
111 printf ("Usage: gcov-dump [OPTION] ... gcovfiles\n");
112 printf ("Print coverage file contents\n");
113 printf (" -h, --help Print this help\n");
114 printf (" -v, --version Print version number\n");
115 printf (" -l, --long Dump record contents too\n");
80abd9e4 116 printf (" -p, --positions Dump record positions\n");
805e22b2 117}
118
119static void
952f0048 120print_version (void)
805e22b2 121{
9e0943d4 122 printf ("gcov-dump (GCC) %s\n", version_string);
478d10e0 123 printf ("Copyright (C) 2006 Free Software Foundation, Inc.\n");
9e0943d4 124 printf ("This is free software; see the source for copying conditions.\n"
125 "There is NO warranty; not even for MERCHANTABILITY or \n"
126 "FITNESS FOR A PARTICULAR PURPOSE.\n\n");
805e22b2 127}
128
129static void
952f0048 130print_prefix (const char *filename, unsigned depth, gcov_position_t position)
805e22b2 131{
132 static const char prefix[] = " ";
952f0048 133
80abd9e4 134 printf ("%s:", filename);
135 if (flag_dump_positions)
136 printf ("%lu:", (unsigned long) position);
137 printf ("%.*s", (int) depth, prefix);
805e22b2 138}
139
140static void
952f0048 141dump_file (const char *filename)
805e22b2 142{
805e22b2 143 unsigned tags[4];
144 unsigned depth = 0;
952f0048 145
9219dd0a 146 if (!gcov_open (filename, 1))
805e22b2 147 {
148 fprintf (stderr, "%s:cannot open\n", filename);
149 return;
150 }
952f0048 151
805e22b2 152 /* magic */
153 {
f187042d 154 unsigned magic = gcov_read_unsigned ();
b4d48d67 155 unsigned version;
805e22b2 156 const char *type = NULL;
b4d48d67 157 int endianness = 0;
9e0943d4 158 char m[4], v[4];
b4d48d67 159
160 if ((endianness = gcov_magic (magic, GCOV_DATA_MAGIC)))
805e22b2 161 type = "data";
b4d48d67 162 else if ((endianness = gcov_magic (magic, GCOV_NOTE_MAGIC)))
163 type = "note";
805e22b2 164 else
165 {
166 printf ("%s:not a gcov file\n", filename);
9219dd0a 167 gcov_close ();
805e22b2 168 return;
169 }
b4d48d67 170 version = gcov_read_unsigned ();
9e0943d4 171 GCOV_UNSIGNED2STRING (v, version);
172 GCOV_UNSIGNED2STRING (m, magic);
b4d48d67 173
174 printf ("%s:%s:magic `%.4s':version `%.4s'%s\n", filename, type,
9e0943d4 175 m, v, endianness < 0 ? " (swapped endianness)" : "");
b4d48d67 176 if (version != GCOV_VERSION)
805e22b2 177 {
9e0943d4 178 char e[4];
b4d48d67 179
9e0943d4 180 GCOV_UNSIGNED2STRING (e, GCOV_VERSION);
181 printf ("%s:warning:current version is `%.4s'\n", filename, e);
805e22b2 182 }
805e22b2 183 }
184
42fa384f 185 /* stamp */
186 {
187 unsigned stamp = gcov_read_unsigned ();
188
189 printf ("%s:stamp %lu\n", filename, (unsigned long)stamp);
190 }
191
80abd9e4 192 while (1)
805e22b2 193 {
80abd9e4 194 gcov_position_t base, position = gcov_position ();
195 unsigned tag, length;
805e22b2 196 tag_format_t const *format;
197 unsigned tag_depth;
f187042d 198 int error;
80abd9e4 199 unsigned mask;
200
201 tag = gcov_read_unsigned ();
805e22b2 202 if (!tag)
80abd9e4 203 break;
204 length = gcov_read_unsigned ();
205 base = gcov_position ();
206 mask = GCOV_TAG_MASK (tag) >> 1;
207 for (tag_depth = 4; mask; mask >>= 8)
805e22b2 208 {
80abd9e4 209 if ((mask & 0xff) != 0xff)
805e22b2 210 {
80abd9e4 211 printf ("%s:tag `%08x' is invalid\n", filename, tag);
212 break;
805e22b2 213 }
80abd9e4 214 tag_depth--;
805e22b2 215 }
216 for (format = tag_table; format->name; format++)
217 if (format->tag == tag)
218 goto found;
ab6a34f2 219 format = &tag_table[GCOV_TAG_IS_COUNTER (tag) ? 2 : 1];
805e22b2 220 found:;
221 if (tag)
222 {
223 if (depth && depth < tag_depth)
224 {
225 if (!GCOV_TAG_IS_SUBTAG (tags[depth - 1], tag))
226 printf ("%s:tag `%08x' is incorrectly nested\n",
227 filename, tag);
228 }
229 depth = tag_depth;
230 tags[depth - 1] = tag;
231 }
952f0048 232
80abd9e4 233 print_prefix (filename, tag_depth, position);
805e22b2 234 printf ("%08x:%4u:%s", tag, length, format->name);
235 if (format->proc)
f187042d 236 (*format->proc) (filename, tag, length);
952f0048 237
805e22b2 238 printf ("\n");
f187042d 239 if (flag_dump_contents && format->proc)
805e22b2 240 {
f187042d 241 unsigned long actual_length = gcov_position () - base;
952f0048 242
f187042d 243 if (actual_length > length)
805e22b2 244 printf ("%s:record size mismatch %lu bytes overread\n",
f187042d 245 filename, actual_length - length);
246 else if (length > actual_length)
805e22b2 247 printf ("%s:record size mismatch %lu bytes unread\n",
f187042d 248 filename, length - actual_length);
249 }
3ddf7676 250 gcov_sync (base, length);
f187042d 251 if ((error = gcov_is_error ()))
252 {
253 printf (error < 0 ? "%s:counter overflow at %lu\n" :
834f169c 254 "%s:read error at %lu\n", filename,
255 (long unsigned) gcov_position ());
f187042d 256 break;
805e22b2 257 }
258 }
9219dd0a 259 gcov_close ();
805e22b2 260}
261
f187042d 262static void
952f0048 263tag_function (const char *filename ATTRIBUTE_UNUSED,
264 unsigned tag ATTRIBUTE_UNUSED, unsigned length ATTRIBUTE_UNUSED)
805e22b2 265{
f187042d 266 unsigned long pos = gcov_position ();
952f0048 267
3f2c2dd8 268 printf (" ident=%u", gcov_read_unsigned ());
269 printf (", checksum=0x%08x", gcov_read_unsigned ());
805e22b2 270
f187042d 271 if (gcov_position () - pos < length)
272 {
3f2c2dd8 273 const char *name;
952f0048 274
3f2c2dd8 275 name = gcov_read_string ();
276 printf (", `%s'", name ? name : "NULL");
f187042d 277 name = gcov_read_string ();
278 printf (" %s", name ? name : "NULL");
279 printf (":%u", gcov_read_unsigned ());
280 }
805e22b2 281}
282
f187042d 283static void
952f0048 284tag_blocks (const char *filename ATTRIBUTE_UNUSED,
285 unsigned tag ATTRIBUTE_UNUSED, unsigned length ATTRIBUTE_UNUSED)
805e22b2 286{
9e0943d4 287 unsigned n_blocks = GCOV_TAG_BLOCKS_NUM (length);
952f0048 288
805e22b2 289 printf (" %u blocks", n_blocks);
290
291 if (flag_dump_contents)
292 {
293 unsigned ix;
294
295 for (ix = 0; ix != n_blocks; ix++)
296 {
805e22b2 297 if (!(ix & 7))
80abd9e4 298 {
299 printf ("\n");
300 print_prefix (filename, 0, gcov_position ());
301 printf ("\t\t%u", ix);
302 }
f187042d 303 printf (" %04x", gcov_read_unsigned ());
805e22b2 304 }
805e22b2 305 }
805e22b2 306}
307
f187042d 308static void
952f0048 309tag_arcs (const char *filename ATTRIBUTE_UNUSED,
310 unsigned tag ATTRIBUTE_UNUSED, unsigned length ATTRIBUTE_UNUSED)
805e22b2 311{
9e0943d4 312 unsigned n_arcs = GCOV_TAG_ARCS_NUM (length);
805e22b2 313
314 printf (" %u arcs", n_arcs);
315 if (flag_dump_contents)
316 {
317 unsigned ix;
f187042d 318 unsigned blockno = gcov_read_unsigned ();
805e22b2 319
320 for (ix = 0; ix != n_arcs; ix++)
321 {
80abd9e4 322 unsigned dst, flags;
952f0048 323
805e22b2 324 if (!(ix & 3))
80abd9e4 325 {
326 printf ("\n");
327 print_prefix (filename, 0, gcov_position ());
328 printf ("\tblock %u:", blockno);
329 }
330 dst = gcov_read_unsigned ();
331 flags = gcov_read_unsigned ();
805e22b2 332 printf (" %u:%04x", dst, flags);
333 }
334 }
805e22b2 335}
336
f187042d 337static void
952f0048 338tag_lines (const char *filename ATTRIBUTE_UNUSED,
339 unsigned tag ATTRIBUTE_UNUSED, unsigned length ATTRIBUTE_UNUSED)
805e22b2 340{
341 if (flag_dump_contents)
342 {
f187042d 343 unsigned blockno = gcov_read_unsigned ();
805e22b2 344 char const *sep = NULL;
345
805e22b2 346 while (1)
347 {
80abd9e4 348 gcov_position_t position = gcov_position ();
f187042d 349 const char *source = NULL;
350 unsigned lineno = gcov_read_unsigned ();
952f0048 351
805e22b2 352 if (!lineno)
353 {
f187042d 354 source = gcov_read_string ();
805e22b2 355 if (!source)
356 break;
357 sep = NULL;
358 }
952f0048 359
805e22b2 360 if (!sep)
361 {
80abd9e4 362 printf ("\n");
363 print_prefix (filename, 0, position);
364 printf ("\tblock %u:", blockno);
805e22b2 365 sep = "";
366 }
367 if (lineno)
368 {
369 printf ("%s%u", sep, lineno);
370 sep = ", ";
371 }
372 else
373 {
374 printf ("%s`%s'", sep, source);
375 sep = ":";
376 }
377 }
378 }
805e22b2 379}
380
f187042d 381static void
952f0048 382tag_counters (const char *filename ATTRIBUTE_UNUSED,
383 unsigned tag ATTRIBUTE_UNUSED, unsigned length ATTRIBUTE_UNUSED)
805e22b2 384{
ab6a34f2 385 static const char *const counter_names[] = GCOV_COUNTER_NAMES;
9e0943d4 386 unsigned n_counts = GCOV_TAG_COUNTER_NUM (length);
952f0048 387
ab6a34f2 388 printf (" %s %u counts",
389 counter_names[GCOV_COUNTER_FOR_TAG (tag)], n_counts);
805e22b2 390 if (flag_dump_contents)
391 {
392 unsigned ix;
393
394 for (ix = 0; ix != n_counts; ix++)
395 {
80abd9e4 396 gcov_type count;
952f0048 397
805e22b2 398 if (!(ix & 7))
80abd9e4 399 {
400 printf ("\n");
401 print_prefix (filename, 0, gcov_position ());
402 printf ("\t\t%u", ix);
403 }
952f0048 404
80abd9e4 405 count = gcov_read_counter ();
805e22b2 406 printf (" ");
407 printf (HOST_WIDEST_INT_PRINT_DEC, count);
408 }
409 }
805e22b2 410}
411
f187042d 412static void
952f0048 413tag_summary (const char *filename ATTRIBUTE_UNUSED,
414 unsigned tag ATTRIBUTE_UNUSED, unsigned length ATTRIBUTE_UNUSED)
805e22b2 415{
416 struct gcov_summary summary;
ab6a34f2 417 unsigned ix;
952f0048 418
ab6a34f2 419 gcov_read_summary (&summary);
805e22b2 420 printf (" checksum=0x%08x", summary.checksum);
952f0048 421
ab6a34f2 422 for (ix = 0; ix != GCOV_COUNTERS; ix++)
423 {
80abd9e4 424 printf ("\n");
425 print_prefix (filename, 0, 0);
426 printf ("\t\tcounts=%u, runs=%u",
ab6a34f2 427 summary.ctrs[ix].num, summary.ctrs[ix].runs);
952f0048 428
ab6a34f2 429 printf (", sum_all=" HOST_WIDEST_INT_PRINT_DEC,
430 (HOST_WIDEST_INT)summary.ctrs[ix].sum_all);
431 printf (", run_max=" HOST_WIDEST_INT_PRINT_DEC,
432 (HOST_WIDEST_INT)summary.ctrs[ix].run_max);
433 printf (", sum_max=" HOST_WIDEST_INT_PRINT_DEC,
434 (HOST_WIDEST_INT)summary.ctrs[ix].sum_max);
435 }
805e22b2 436}