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Commit | Line | Data |
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86144b75 DE |
1 | /* Gcov.c: prepend line execution counts and branch probabilities to a |
2 | source file. | |
a6d6c2c0 | 3 | Copyright (C) 1990, 1991, 1992, 1993, 1994, 1996, 1997, 1998, 1999, |
9f8e43c0 | 4 | 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
0e5997c0 | 5 | Free Software Foundation, Inc. |
86144b75 | 6 | Contributed by James E. Wilson of Cygnus Support. |
1d300e19 | 7 | Mangled by Bob Manson of Cygnus Support. |
4977bab6 | 8 | Mangled further by Nathan Sidwell <nathan@codesourcery.com> |
86144b75 DE |
9 | |
10 | Gcov is free software; you can redistribute it and/or modify | |
11 | it under the terms of the GNU General Public License as published by | |
9dcd6f09 | 12 | the Free Software Foundation; either version 3, or (at your option) |
86144b75 DE |
13 | any later version. |
14 | ||
15 | Gcov is distributed in the hope that it will be useful, | |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
9dcd6f09 NC |
21 | along with Gcov; see the file COPYING3. If not see |
22 | <http://www.gnu.org/licenses/>. */ | |
86144b75 | 23 | |
86144b75 DE |
24 | /* ??? Print a list of the ten blocks with the highest execution counts, |
25 | and list the line numbers corresponding to those blocks. Also, perhaps | |
26 | list the line numbers with the highest execution counts, only printing | |
27 | the first if there are several which are all listed in the same block. */ | |
28 | ||
29 | /* ??? Should have an option to print the number of basic blocks, and the | |
30 | percent of them that are covered. */ | |
31 | ||
4977bab6 ZW |
32 | /* Need an option to show individual block counts, and show |
33 | probabilities of fall through arcs. */ | |
86144b75 | 34 | |
1d300e19 | 35 | #include "config.h" |
b04cd507 | 36 | #include "system.h" |
4977bab6 ZW |
37 | #include "coretypes.h" |
38 | #include "tm.h" | |
ab87f8c8 | 39 | #include "intl.h" |
5735c3ea | 40 | #include "version.h" |
86144b75 | 41 | |
5735c3ea JM |
42 | #include <getopt.h> |
43 | ||
546d2adb | 44 | #define IN_GCOV 1 |
86144b75 | 45 | #include "gcov-io.h" |
d79f9ec9 | 46 | #include "gcov-io.c" |
86144b75 | 47 | |
1a9075e2 | 48 | /* The gcno file is generated by -ftest-coverage option. The gcda file is |
4977bab6 ZW |
49 | generated by a program compiled with -fprofile-arcs. Their formats |
50 | are documented in gcov-io.h. */ | |
86144b75 DE |
51 | |
52 | /* The functions in this file for creating and solution program flow graphs | |
4977bab6 ZW |
53 | are very similar to functions in the gcc source file profile.c. In |
54 | some places we make use of the knowledge of how profile.c works to | |
55 | select particular algorithms here. */ | |
86144b75 | 56 | |
86144b75 DE |
57 | /* This is the size of the buffer used to read in source file lines. */ |
58 | ||
59 | #define STRING_SIZE 200 | |
60 | ||
4977bab6 ZW |
61 | struct function_info; |
62 | struct block_info; | |
27283c73 | 63 | struct source_info; |
86144b75 | 64 | |
4977bab6 | 65 | /* Describes an arc between two basic blocks. */ |
86144b75 | 66 | |
4977bab6 ZW |
67 | typedef struct arc_info |
68 | { | |
32dd366d | 69 | /* source and destination blocks. */ |
4977bab6 ZW |
70 | struct block_info *src; |
71 | struct block_info *dst; | |
86144b75 | 72 | |
4977bab6 ZW |
73 | /* transition counts. */ |
74 | gcov_type count; | |
3d7ca167 ZD |
75 | /* used in cycle search, so that we do not clobber original counts. */ |
76 | gcov_type cs_count; | |
86144b75 | 77 | |
86144b75 DE |
78 | unsigned int count_valid : 1; |
79 | unsigned int on_tree : 1; | |
80 | unsigned int fake : 1; | |
81 | unsigned int fall_through : 1; | |
86144b75 | 82 | |
27283c73 NS |
83 | /* Arc is for a function that abnormally returns. */ |
84 | unsigned int is_call_non_return : 1; | |
85 | ||
fa10beec | 86 | /* Arc is for catch/setjmp. */ |
27283c73 NS |
87 | unsigned int is_nonlocal_return : 1; |
88 | ||
89 | /* Is an unconditional branch. */ | |
90 | unsigned int is_unconditional : 1; | |
91 | ||
10b7602f NS |
92 | /* Loop making arc. */ |
93 | unsigned int cycle : 1; | |
94 | ||
4977bab6 ZW |
95 | /* Next branch on line. */ |
96 | struct arc_info *line_next; | |
f55ade6e | 97 | |
4977bab6 ZW |
98 | /* Links to next arc on src and dst lists. */ |
99 | struct arc_info *succ_next; | |
100 | struct arc_info *pred_next; | |
101 | } arc_t; | |
86144b75 | 102 | |
4977bab6 ZW |
103 | /* Describes a basic block. Contains lists of arcs to successor and |
104 | predecessor blocks. */ | |
86144b75 | 105 | |
4977bab6 | 106 | typedef struct block_info |
86144b75 | 107 | { |
4977bab6 ZW |
108 | /* Chain of exit and entry arcs. */ |
109 | arc_t *succ; | |
110 | arc_t *pred; | |
111 | ||
32dd366d | 112 | /* Number of unprocessed exit and entry arcs. */ |
4977bab6 ZW |
113 | gcov_type num_succ; |
114 | gcov_type num_pred; | |
115 | ||
32dd366d | 116 | /* Block execution count. */ |
4977bab6 | 117 | gcov_type count; |
27283c73 | 118 | unsigned flags : 13; |
4977bab6 ZW |
119 | unsigned count_valid : 1; |
120 | unsigned valid_chain : 1; | |
121 | unsigned invalid_chain : 1; | |
122 | ||
27283c73 | 123 | /* Block is a call instrumenting site. */ |
10b7602f NS |
124 | unsigned is_call_site : 1; /* Does the call. */ |
125 | unsigned is_call_return : 1; /* Is the return. */ | |
4977bab6 | 126 | |
27283c73 NS |
127 | /* Block is a landing pad for longjmp or throw. */ |
128 | unsigned is_nonlocal_return : 1; | |
129 | ||
130 | union | |
131 | { | |
132 | struct | |
133 | { | |
134 | /* Array of line numbers and source files. source files are | |
135 | introduced by a linenumber of zero, the next 'line number' is | |
136 | the number of the source file. Always starts with a source | |
137 | file. */ | |
138 | unsigned *encoding; | |
139 | unsigned num; | |
140 | } line; /* Valid until blocks are linked onto lines */ | |
141 | struct | |
142 | { | |
10b7602f | 143 | /* Single line graph cycle workspace. Used for all-blocks |
71c0e7fc | 144 | mode. */ |
10b7602f NS |
145 | arc_t *arc; |
146 | unsigned ident; | |
147 | } cycle; /* Used in all-blocks mode, after blocks are linked onto | |
71c0e7fc | 148 | lines. */ |
27283c73 NS |
149 | } u; |
150 | ||
151 | /* Temporary chain for solving graph, and for chaining blocks on one | |
152 | line. */ | |
4977bab6 | 153 | struct block_info *chain; |
f55ade6e | 154 | |
4977bab6 | 155 | } block_t; |
86144b75 | 156 | |
4977bab6 | 157 | /* Describes a single function. Contains an array of basic blocks. */ |
86144b75 | 158 | |
4977bab6 | 159 | typedef struct function_info |
8b219a76 | 160 | { |
4977bab6 ZW |
161 | /* Name of function. */ |
162 | char *name; | |
796621e8 | 163 | unsigned ident; |
4977bab6 | 164 | unsigned checksum; |
86144b75 | 165 | |
4977bab6 ZW |
166 | /* Array of basic blocks. */ |
167 | block_t *blocks; | |
168 | unsigned num_blocks; | |
27283c73 | 169 | unsigned blocks_executed; |
4977bab6 ZW |
170 | |
171 | /* Raw arc coverage counts. */ | |
172 | gcov_type *counts; | |
173 | unsigned num_counts; | |
27283c73 NS |
174 | |
175 | /* First line number. */ | |
176 | unsigned line; | |
177 | struct source_info *src; | |
178 | ||
179 | /* Next function in same source file. */ | |
180 | struct function_info *line_next; | |
f55ade6e | 181 | |
4977bab6 ZW |
182 | /* Next function. */ |
183 | struct function_info *next; | |
184 | } function_t; | |
185 | ||
186 | /* Describes coverage of a file or function. */ | |
187 | ||
188 | typedef struct coverage_info | |
8b219a76 NS |
189 | { |
190 | int lines; | |
191 | int lines_executed; | |
f55ade6e | 192 | |
8b219a76 NS |
193 | int branches; |
194 | int branches_executed; | |
195 | int branches_taken; | |
f55ade6e | 196 | |
8b219a76 NS |
197 | int calls; |
198 | int calls_executed; | |
f55ade6e | 199 | |
8b219a76 | 200 | char *name; |
4977bab6 | 201 | } coverage_t; |
8b219a76 | 202 | |
4977bab6 ZW |
203 | /* Describes a single line of source. Contains a chain of basic blocks |
204 | with code on it. */ | |
86144b75 | 205 | |
4977bab6 ZW |
206 | typedef struct line_info |
207 | { | |
208 | gcov_type count; /* execution count */ | |
27283c73 NS |
209 | union |
210 | { | |
f55ade6e | 211 | arc_t *branches; /* branches from blocks that end on this |
27283c73 | 212 | line. Used for branch-counts when not |
71c0e7fc | 213 | all-blocks mode. */ |
27283c73 | 214 | block_t *blocks; /* blocks which start on this line. Used |
71c0e7fc | 215 | in all-blocks mode. */ |
27283c73 | 216 | } u; |
4977bab6 ZW |
217 | unsigned exists : 1; |
218 | } line_t; | |
86144b75 | 219 | |
4977bab6 ZW |
220 | /* Describes a file mentioned in the block graph. Contains an array |
221 | of line info. */ | |
37b8715b | 222 | |
4977bab6 ZW |
223 | typedef struct source_info |
224 | { | |
225 | /* Name of source file. */ | |
226 | char *name; | |
227 | unsigned index; | |
1a9075e2 | 228 | time_t file_time; |
37b8715b | 229 | |
32dd366d | 230 | /* Array of line information. */ |
4977bab6 ZW |
231 | line_t *lines; |
232 | unsigned num_lines; | |
86144b75 | 233 | |
4977bab6 | 234 | coverage_t coverage; |
27283c73 NS |
235 | |
236 | /* Functions in this source file. These are in ascending line | |
237 | number order. */ | |
238 | function_t *functions; | |
f55ade6e | 239 | |
4977bab6 ZW |
240 | /* Next source file. */ |
241 | struct source_info *next; | |
242 | } source_t; | |
86144b75 | 243 | |
4977bab6 | 244 | /* Holds a list of function basic block graphs. */ |
86144b75 | 245 | |
4977bab6 | 246 | static function_t *functions; |
86144b75 | 247 | |
1a9075e2 TG |
248 | /* This points to the head of the sourcefile structure list. New elements |
249 | are always prepended. */ | |
86144b75 | 250 | |
4977bab6 | 251 | static source_t *sources; |
86144b75 | 252 | |
1a9075e2 TG |
253 | /* Next index for a source file. */ |
254 | ||
255 | static unsigned source_index; | |
256 | ||
27283c73 NS |
257 | /* This holds data summary information. */ |
258 | ||
259 | static struct gcov_summary object_summary; | |
260 | static unsigned program_count; | |
261 | ||
32dd366d | 262 | /* Modification time of graph file. */ |
86144b75 | 263 | |
4977bab6 | 264 | static time_t bbg_file_time; |
86144b75 | 265 | |
4977bab6 | 266 | /* Name and file pointer of the input file for the basic block graph. */ |
86144b75 | 267 | |
4977bab6 | 268 | static char *bbg_file_name; |
86144b75 | 269 | |
dd486eb2 NS |
270 | /* Stamp of the bbg file */ |
271 | static unsigned bbg_stamp; | |
272 | ||
4977bab6 | 273 | /* Name and file pointer of the input file for the arc count data. */ |
86144b75 | 274 | |
4977bab6 | 275 | static char *da_file_name; |
86144b75 | 276 | |
80b3502b NS |
277 | /* Data file is missing. */ |
278 | ||
279 | static int no_data_file; | |
280 | ||
1a9075e2 TG |
281 | /* If there is several input files, compute and display results after |
282 | reading all data files. This way if two or more gcda file refer to | |
283 | the same source file (eg inline subprograms in a .h file), the | |
284 | counts are added. */ | |
285 | ||
286 | static int multiple_files = 0; | |
287 | ||
4977bab6 | 288 | /* Output branch probabilities. */ |
86144b75 | 289 | |
4977bab6 | 290 | static int flag_branches = 0; |
86144b75 | 291 | |
f55ade6e | 292 | /* Show unconditional branches too. */ |
27283c73 NS |
293 | static int flag_unconditional = 0; |
294 | ||
86144b75 DE |
295 | /* Output a gcov file if this is true. This is on by default, and can |
296 | be turned off by the -n option. */ | |
297 | ||
4977bab6 | 298 | static int flag_gcov_file = 1; |
86144b75 | 299 | |
acdb4da7 NS |
300 | /* Output progress indication if this is true. This is off by default |
301 | and can be turned on by the -d option. */ | |
302 | ||
303 | static int flag_display_progress = 0; | |
304 | ||
4977bab6 ZW |
305 | /* For included files, make the gcov output file name include the name |
306 | of the input source file. For example, if x.h is included in a.c, | |
307 | then the output file name is a.c##x.h.gcov instead of x.h.gcov. */ | |
86144b75 | 308 | |
4977bab6 | 309 | static int flag_long_names = 0; |
86144b75 | 310 | |
27283c73 NS |
311 | /* Output count information for every basic block, not merely those |
312 | that contain line number information. */ | |
313 | ||
314 | static int flag_all_blocks = 0; | |
315 | ||
86144b75 DE |
316 | /* Output summary info for each function. */ |
317 | ||
4977bab6 | 318 | static int flag_function_summary = 0; |
86144b75 | 319 | |
4977bab6 ZW |
320 | /* Object directory file prefix. This is the directory/file where the |
321 | graph and data files are looked for, if nonzero. */ | |
86144b75 DE |
322 | |
323 | static char *object_directory = 0; | |
324 | ||
37b8715b | 325 | /* Preserve all pathname components. Needed when object files and |
4977bab6 ZW |
326 | source files are in subdirectories. '/' is mangled as '#', '.' is |
327 | elided and '..' mangled to '^'. */ | |
328 | ||
329 | static int flag_preserve_paths = 0; | |
37b8715b | 330 | |
8bfa6fc5 | 331 | /* Output the number of times a branch was taken as opposed to the percentage |
32dd366d | 332 | of times it was taken. */ |
23190837 | 333 | |
4977bab6 | 334 | static int flag_counts = 0; |
8bfa6fc5 | 335 | |
86144b75 | 336 | /* Forward declarations. */ |
f55ade6e AJ |
337 | static void fnotice (FILE *, const char *, ...) ATTRIBUTE_PRINTF_2; |
338 | static int process_args (int, char **); | |
339 | static void print_usage (int) ATTRIBUTE_NORETURN; | |
340 | static void print_version (void) ATTRIBUTE_NORETURN; | |
341 | static void process_file (const char *); | |
1a9075e2 | 342 | static void generate_results (const char *); |
f55ade6e AJ |
343 | static void create_file_names (const char *); |
344 | static source_t *find_source (const char *); | |
345 | static int read_graph_file (void); | |
346 | static int read_count_file (void); | |
347 | static void solve_flow_graph (function_t *); | |
348 | static void add_branch_counts (coverage_t *, const arc_t *); | |
349 | static void add_line_counts (coverage_t *, function_t *); | |
350 | static void function_summary (const coverage_t *, const char *); | |
351 | static const char *format_gcov (gcov_type, gcov_type, int); | |
352 | static void accumulate_line_counts (source_t *); | |
353 | static int output_branch_count (FILE *, int, const arc_t *); | |
354 | static void output_lines (FILE *, const source_t *); | |
355 | static char *make_gcov_file_name (const char *, const char *); | |
356 | static void release_structures (void); | |
357 | extern int main (int, char **); | |
86144b75 DE |
358 | |
359 | int | |
f55ade6e | 360 | main (int argc, char **argv) |
86144b75 | 361 | { |
4977bab6 | 362 | int argno; |
acdb4da7 | 363 | int first_arg; |
f55ade6e | 364 | |
98a3dad4 | 365 | /* Unlock the stdio streams. */ |
2653bb0c | 366 | unlock_std_streams (); |
98a3dad4 | 367 | |
191bf464 | 368 | gcc_init_libintl (); |
ab87f8c8 | 369 | |
e3536b82 TG |
370 | /* Handle response files. */ |
371 | expandargv (&argc, &argv); | |
372 | ||
4977bab6 ZW |
373 | argno = process_args (argc, argv); |
374 | if (optind == argc) | |
375 | print_usage (true); | |
86144b75 | 376 | |
1a9075e2 TG |
377 | if (argc - argno > 1) |
378 | multiple_files = 1; | |
379 | ||
acdb4da7 NS |
380 | first_arg = argno; |
381 | ||
4977bab6 | 382 | for (; argno != argc; argno++) |
acdb4da7 NS |
383 | { |
384 | if (flag_display_progress) | |
385 | printf("Processing file %d out of %d\n", | |
386 | argno - first_arg + 1, argc - first_arg); | |
387 | process_file (argv[argno]); | |
388 | } | |
f55ade6e | 389 | |
1a9075e2 TG |
390 | generate_results (multiple_files ? NULL : argv[argc - 1]); |
391 | ||
392 | release_structures (); | |
f55ade6e | 393 | |
86144b75 DE |
394 | return 0; |
395 | } | |
396 | ||
ab87f8c8 | 397 | static void |
4b794eaf | 398 | fnotice (FILE *file, const char *cmsgid, ...) |
ab87f8c8 | 399 | { |
e34d07f2 | 400 | va_list ap; |
f55ade6e | 401 | |
4b794eaf JJ |
402 | va_start (ap, cmsgid); |
403 | vfprintf (file, _(cmsgid), ap); | |
e34d07f2 | 404 | va_end (ap); |
ab87f8c8 | 405 | } |
86144b75 | 406 | \f |
5735c3ea JM |
407 | /* Print a usage message and exit. If ERROR_P is nonzero, this is an error, |
408 | otherwise the output of --help. */ | |
86144b75 DE |
409 | |
410 | static void | |
f55ade6e | 411 | print_usage (int error_p) |
86144b75 | 412 | { |
5735c3ea JM |
413 | FILE *file = error_p ? stderr : stdout; |
414 | int status = error_p ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE; | |
f55ade6e | 415 | |
1a9075e2 | 416 | fnotice (file, "Usage: gcov [OPTION]... SOURCEFILE...\n\n"); |
5735c3ea JM |
417 | fnotice (file, "Print code coverage information.\n\n"); |
418 | fnotice (file, " -h, --help Print this help, then exit\n"); | |
419 | fnotice (file, " -v, --version Print version number, then exit\n"); | |
27283c73 | 420 | fnotice (file, " -a, --all-blocks Show information for every basic block\n"); |
5735c3ea JM |
421 | fnotice (file, " -b, --branch-probabilities Include branch probabilities in output\n"); |
422 | fnotice (file, " -c, --branch-counts Given counts of branches taken\n\ | |
423 | rather than percentages\n"); | |
424 | fnotice (file, " -n, --no-output Do not create an output file\n"); | |
425 | fnotice (file, " -l, --long-file-names Use long output file names for included\n\ | |
426 | source files\n"); | |
427 | fnotice (file, " -f, --function-summaries Output summaries for each function\n"); | |
37b8715b NS |
428 | fnotice (file, " -o, --object-directory DIR|FILE Search for object files in DIR or called FILE\n"); |
429 | fnotice (file, " -p, --preserve-paths Preserve all pathname components\n"); | |
27283c73 | 430 | fnotice (file, " -u, --unconditional-branches Show unconditional branch counts too\n"); |
acdb4da7 | 431 | fnotice (file, " -d, --display-progress Display progress information\n"); |
5735c3ea | 432 | fnotice (file, "\nFor bug reporting instructions, please see:\n%s.\n", |
a976603e | 433 | bug_report_url); |
5735c3ea JM |
434 | exit (status); |
435 | } | |
436 | ||
437 | /* Print version information and exit. */ | |
438 | ||
439 | static void | |
f55ade6e | 440 | print_version (void) |
5735c3ea | 441 | { |
2f41c1d6 | 442 | fnotice (stdout, "gcov %s%s\n", pkgversion_string, version_string); |
9f8e43c0 | 443 | fprintf (stdout, "Copyright %s 2011 Free Software Foundation, Inc.\n", |
9f76f909 | 444 | _("(C)")); |
5735c3ea | 445 | fnotice (stdout, |
9f76f909 KH |
446 | _("This is free software; see the source for copying conditions.\n" |
447 | "There is NO warranty; not even for MERCHANTABILITY or \n" | |
448 | "FITNESS FOR A PARTICULAR PURPOSE.\n\n")); | |
5735c3ea | 449 | exit (SUCCESS_EXIT_CODE); |
86144b75 DE |
450 | } |
451 | ||
5735c3ea JM |
452 | static const struct option options[] = |
453 | { | |
454 | { "help", no_argument, NULL, 'h' }, | |
455 | { "version", no_argument, NULL, 'v' }, | |
27283c73 | 456 | { "all-blocks", no_argument, NULL, 'a' }, |
5735c3ea JM |
457 | { "branch-probabilities", no_argument, NULL, 'b' }, |
458 | { "branch-counts", no_argument, NULL, 'c' }, | |
459 | { "no-output", no_argument, NULL, 'n' }, | |
460 | { "long-file-names", no_argument, NULL, 'l' }, | |
461 | { "function-summaries", no_argument, NULL, 'f' }, | |
37b8715b NS |
462 | { "preserve-paths", no_argument, NULL, 'p' }, |
463 | { "object-directory", required_argument, NULL, 'o' }, | |
464 | { "object-file", required_argument, NULL, 'o' }, | |
27283c73 | 465 | { "unconditional-branches", no_argument, NULL, 'u' }, |
acdb4da7 | 466 | { "display-progress", no_argument, NULL, 'd' }, |
d90f9882 | 467 | { 0, 0, 0, 0 } |
5735c3ea JM |
468 | }; |
469 | ||
4977bab6 | 470 | /* Process args, return index to first non-arg. */ |
86144b75 | 471 | |
4977bab6 | 472 | static int |
f55ade6e | 473 | process_args (int argc, char **argv) |
86144b75 | 474 | { |
5735c3ea | 475 | int opt; |
86144b75 | 476 | |
acdb4da7 | 477 | while ((opt = getopt_long (argc, argv, "abcdfhlno:puv", options, NULL)) != -1) |
86144b75 | 478 | { |
5735c3ea | 479 | switch (opt) |
86144b75 | 480 | { |
27283c73 NS |
481 | case 'a': |
482 | flag_all_blocks = 1; | |
483 | break; | |
5735c3ea | 484 | case 'b': |
4977bab6 | 485 | flag_branches = 1; |
5735c3ea JM |
486 | break; |
487 | case 'c': | |
4977bab6 | 488 | flag_counts = 1; |
5735c3ea | 489 | break; |
27283c73 NS |
490 | case 'f': |
491 | flag_function_summary = 1; | |
5735c3ea | 492 | break; |
27283c73 NS |
493 | case 'h': |
494 | print_usage (false); | |
495 | /* print_usage will exit. */ | |
5735c3ea | 496 | case 'l': |
4977bab6 | 497 | flag_long_names = 1; |
5735c3ea | 498 | break; |
27283c73 NS |
499 | case 'n': |
500 | flag_gcov_file = 0; | |
5735c3ea JM |
501 | break; |
502 | case 'o': | |
503 | object_directory = optarg; | |
504 | break; | |
37b8715b | 505 | case 'p': |
4977bab6 | 506 | flag_preserve_paths = 1; |
37b8715b | 507 | break; |
27283c73 NS |
508 | case 'u': |
509 | flag_unconditional = 1; | |
510 | break; | |
acdb4da7 NS |
511 | case 'd': |
512 | flag_display_progress = 1; | |
513 | break; | |
27283c73 NS |
514 | case 'v': |
515 | print_version (); | |
516 | /* print_version will exit. */ | |
5735c3ea JM |
517 | default: |
518 | print_usage (true); | |
519 | /* print_usage will exit. */ | |
86144b75 | 520 | } |
86144b75 DE |
521 | } |
522 | ||
4977bab6 ZW |
523 | return optind; |
524 | } | |
525 | ||
526 | /* Process a single source file. */ | |
5735c3ea | 527 | |
4977bab6 | 528 | static void |
f55ade6e | 529 | process_file (const char *file_name) |
4977bab6 | 530 | { |
4977bab6 | 531 | function_t *fn; |
1a9075e2 TG |
532 | function_t *fn_p; |
533 | function_t *old_functions; | |
534 | ||
535 | /* Save and clear the list of current functions. They will be appended | |
536 | later. */ | |
537 | old_functions = functions; | |
538 | functions = NULL; | |
f55ade6e | 539 | |
4977bab6 ZW |
540 | create_file_names (file_name); |
541 | if (read_graph_file ()) | |
542 | return; | |
f55ade6e | 543 | |
4977bab6 ZW |
544 | if (!functions) |
545 | { | |
546 | fnotice (stderr, "%s:no functions found\n", bbg_file_name); | |
547 | return; | |
548 | } | |
f55ade6e | 549 | |
4977bab6 ZW |
550 | if (read_count_file ()) |
551 | return; | |
f55ade6e | 552 | |
1a9075e2 | 553 | for (fn_p = NULL, fn = functions; fn; fn_p = fn, fn = fn->next) |
4977bab6 | 554 | solve_flow_graph (fn); |
1a9075e2 TG |
555 | |
556 | if (fn_p) | |
557 | fn_p->next = old_functions; | |
558 | } | |
559 | ||
560 | static void | |
561 | generate_results (const char *file_name) | |
562 | { | |
563 | source_t *src; | |
564 | function_t *fn; | |
565 | ||
4977bab6 | 566 | for (src = sources; src; src = src->next) |
5ed6ace5 | 567 | src->lines = XCNEWVEC (line_t, src->num_lines); |
4977bab6 ZW |
568 | for (fn = functions; fn; fn = fn->next) |
569 | { | |
570 | coverage_t coverage; | |
f55ade6e | 571 | |
4977bab6 ZW |
572 | memset (&coverage, 0, sizeof (coverage)); |
573 | coverage.name = fn->name; | |
574 | add_line_counts (flag_function_summary ? &coverage : NULL, fn); | |
575 | if (flag_function_summary) | |
576 | { | |
577 | function_summary (&coverage, "Function"); | |
578 | fnotice (stdout, "\n"); | |
579 | } | |
580 | } | |
f55ade6e | 581 | |
4977bab6 ZW |
582 | for (src = sources; src; src = src->next) |
583 | { | |
584 | accumulate_line_counts (src); | |
585 | function_summary (&src->coverage, "File"); | |
586 | if (flag_gcov_file) | |
587 | { | |
588 | char *gcov_file_name = make_gcov_file_name (file_name, src->name); | |
589 | FILE *gcov_file = fopen (gcov_file_name, "w"); | |
f55ade6e | 590 | |
4977bab6 ZW |
591 | if (gcov_file) |
592 | { | |
9e637a26 | 593 | fnotice (stdout, "%s:creating '%s'\n", |
4977bab6 ZW |
594 | src->name, gcov_file_name); |
595 | output_lines (gcov_file, src); | |
596 | if (ferror (gcov_file)) | |
9e637a26 | 597 | fnotice (stderr, "%s:error writing output file '%s'\n", |
4977bab6 ZW |
598 | src->name, gcov_file_name); |
599 | fclose (gcov_file); | |
600 | } | |
601 | else | |
9e637a26 | 602 | fnotice (stderr, "%s:could not open output file '%s'\n", |
4977bab6 ZW |
603 | src->name, gcov_file_name); |
604 | free (gcov_file_name); | |
605 | } | |
606 | fnotice (stdout, "\n"); | |
607 | } | |
86144b75 DE |
608 | } |
609 | ||
4977bab6 | 610 | /* Release all memory used. */ |
86144b75 | 611 | |
4977bab6 | 612 | static void |
f55ade6e | 613 | release_structures (void) |
4977bab6 ZW |
614 | { |
615 | function_t *fn; | |
616 | source_t *src; | |
f55ade6e | 617 | |
4977bab6 ZW |
618 | while ((src = sources)) |
619 | { | |
620 | sources = src->next; | |
621 | ||
622 | free (src->name); | |
623 | free (src->lines); | |
624 | } | |
f55ade6e | 625 | |
4977bab6 ZW |
626 | while ((fn = functions)) |
627 | { | |
628 | unsigned ix; | |
629 | block_t *block; | |
f55ade6e | 630 | |
4977bab6 ZW |
631 | functions = fn->next; |
632 | for (ix = fn->num_blocks, block = fn->blocks; ix--; block++) | |
633 | { | |
634 | arc_t *arc, *arc_n; | |
635 | ||
636 | for (arc = block->succ; arc; arc = arc_n) | |
637 | { | |
638 | arc_n = arc->succ_next; | |
639 | free (arc); | |
640 | } | |
4977bab6 ZW |
641 | } |
642 | free (fn->blocks); | |
643 | free (fn->counts); | |
644 | } | |
645 | } | |
646 | ||
647 | /* Generate the names of the graph and data files. If OBJECT_DIRECTORY | |
648 | is not specified, these are looked for in the current directory, | |
649 | and named from the basename of the FILE_NAME sans extension. If | |
37b8715b | 650 | OBJECT_DIRECTORY is specified and is a directory, the files are in |
4977bab6 ZW |
651 | that directory, but named from the basename of the FILE_NAME, sans |
652 | extension. Otherwise OBJECT_DIRECTORY is taken to be the name of | |
653 | the object *file*, and the data files are named from that. */ | |
86144b75 DE |
654 | |
655 | static void | |
f55ade6e | 656 | create_file_names (const char *file_name) |
86144b75 | 657 | { |
86144b75 | 658 | char *cptr; |
37b8715b | 659 | char *name; |
4977bab6 | 660 | int length = strlen (file_name); |
37b8715b | 661 | int base; |
f55ade6e | 662 | |
1a9075e2 TG |
663 | /* Free previous file names. */ |
664 | if (bbg_file_name) | |
665 | free (bbg_file_name); | |
666 | if (da_file_name) | |
667 | free (da_file_name); | |
668 | da_file_name = bbg_file_name = NULL; | |
669 | bbg_file_time = 0; | |
670 | bbg_stamp = 0; | |
671 | ||
37b8715b | 672 | if (object_directory && object_directory[0]) |
86144b75 | 673 | { |
37b8715b NS |
674 | struct stat status; |
675 | ||
676 | length += strlen (object_directory) + 2; | |
5ed6ace5 | 677 | name = XNEWVEC (char, length); |
37b8715b | 678 | name[0] = 0; |
f55ade6e | 679 | |
37b8715b NS |
680 | base = !stat (object_directory, &status) && S_ISDIR (status.st_mode); |
681 | strcat (name, object_directory); | |
2f07423c | 682 | if (base && (! IS_DIR_SEPARATOR (name[strlen (name) - 1]))) |
37b8715b | 683 | strcat (name, "/"); |
86144b75 DE |
684 | } |
685 | else | |
686 | { | |
5ed6ace5 | 687 | name = XNEWVEC (char, length + 1); |
37b8715b NS |
688 | name[0] = 0; |
689 | base = 1; | |
86144b75 | 690 | } |
f55ade6e | 691 | |
37b8715b NS |
692 | if (base) |
693 | { | |
f9da5064 | 694 | /* Append source file name. */ |
2f07423c PO |
695 | const char *cptr = lbasename (file_name); |
696 | strcat (name, cptr ? cptr : file_name); | |
37b8715b | 697 | } |
f55ade6e | 698 | |
4b7e68e7 | 699 | /* Remove the extension. */ |
37b8715b | 700 | cptr = strrchr (name, '.'); |
86144b75 | 701 | if (cptr) |
37b8715b | 702 | *cptr = 0; |
f55ade6e | 703 | |
37b8715b | 704 | length = strlen (name); |
b8698a0f | 705 | |
5ed6ace5 | 706 | bbg_file_name = XNEWVEC (char, length + strlen (GCOV_NOTE_SUFFIX) + 1); |
4977bab6 | 707 | strcpy (bbg_file_name, name); |
160e2e4f | 708 | strcpy (bbg_file_name + length, GCOV_NOTE_SUFFIX); |
37b8715b | 709 | |
5ed6ace5 | 710 | da_file_name = XNEWVEC (char, length + strlen (GCOV_DATA_SUFFIX) + 1); |
4977bab6 ZW |
711 | strcpy (da_file_name, name); |
712 | strcpy (da_file_name + length, GCOV_DATA_SUFFIX); | |
f55ade6e | 713 | |
a14df7da | 714 | free (name); |
4977bab6 | 715 | return; |
86144b75 | 716 | } |
86144b75 | 717 | |
94de45d9 NS |
718 | /* Find or create a source file structure for FILE_NAME. Copies |
719 | FILE_NAME on creation */ | |
27283c73 NS |
720 | |
721 | static source_t * | |
f55ade6e | 722 | find_source (const char *file_name) |
27283c73 | 723 | { |
27283c73 | 724 | source_t *src; |
1a9075e2 | 725 | struct stat status; |
94de45d9 NS |
726 | |
727 | if (!file_name) | |
728 | file_name = "<unknown>"; | |
f55ade6e | 729 | |
27283c73 NS |
730 | for (src = sources; src; src = src->next) |
731 | if (!strcmp (file_name, src->name)) | |
1a9075e2 | 732 | break; |
f55ade6e | 733 | |
1a9075e2 TG |
734 | if (!src) |
735 | { | |
736 | src = XCNEW (source_t); | |
737 | src->name = xstrdup (file_name); | |
738 | src->coverage.name = src->name; | |
739 | src->index = source_index++; | |
740 | src->next = sources; | |
741 | sources = src; | |
b8698a0f | 742 | |
1a9075e2 TG |
743 | if (!stat (file_name, &status)) |
744 | src->file_time = status.st_mtime; | |
745 | } | |
746 | ||
747 | if (src->file_time > bbg_file_time) | |
748 | { | |
749 | static int info_emitted; | |
750 | ||
751 | fnotice (stderr, "%s:source file is newer than graph file '%s'\n", | |
752 | src->name, bbg_file_name); | |
753 | if (!info_emitted) | |
754 | { | |
755 | fnotice (stderr, | |
756 | "(the message is only displayed one per source file)\n"); | |
757 | info_emitted = 1; | |
758 | } | |
759 | src->file_time = 0; | |
760 | } | |
94de45d9 | 761 | |
27283c73 NS |
762 | return src; |
763 | } | |
764 | ||
272d0bee | 765 | /* Read the graph file. Return nonzero on fatal error. */ |
86144b75 | 766 | |
4977bab6 | 767 | static int |
f55ade6e | 768 | read_graph_file (void) |
86144b75 | 769 | { |
94de45d9 | 770 | unsigned version; |
4977bab6 | 771 | unsigned current_tag = 0; |
4977bab6 | 772 | struct function_info *fn = NULL; |
1a9075e2 | 773 | function_t *old_functions_head = functions; |
4977bab6 ZW |
774 | source_t *src = NULL; |
775 | unsigned ix; | |
7d63a2fa | 776 | unsigned tag; |
f55ade6e | 777 | |
546d2adb | 778 | if (!gcov_open (bbg_file_name, 1)) |
86144b75 | 779 | { |
4977bab6 ZW |
780 | fnotice (stderr, "%s:cannot open graph file\n", bbg_file_name); |
781 | return 1; | |
86144b75 | 782 | } |
546d2adb | 783 | bbg_file_time = gcov_time (); |
160e2e4f | 784 | if (!gcov_magic (gcov_read_unsigned (), GCOV_NOTE_MAGIC)) |
b7c9bf28 | 785 | { |
4977bab6 | 786 | fnotice (stderr, "%s:not a gcov graph file\n", bbg_file_name); |
546d2adb | 787 | gcov_close (); |
4977bab6 ZW |
788 | return 1; |
789 | } | |
b7c9bf28 | 790 | |
94de45d9 NS |
791 | version = gcov_read_unsigned (); |
792 | if (version != GCOV_VERSION) | |
4977bab6 ZW |
793 | { |
794 | char v[4], e[4]; | |
f55ade6e | 795 | |
330d2e2a NS |
796 | GCOV_UNSIGNED2STRING (v, version); |
797 | GCOV_UNSIGNED2STRING (e, GCOV_VERSION); | |
798 | ||
9e637a26 | 799 | fnotice (stderr, "%s:version '%.4s', prefer '%.4s'\n", |
4977bab6 ZW |
800 | bbg_file_name, v, e); |
801 | } | |
dd486eb2 NS |
802 | bbg_stamp = gcov_read_unsigned (); |
803 | ||
7d63a2fa | 804 | while ((tag = gcov_read_unsigned ())) |
4977bab6 | 805 | { |
94de45d9 | 806 | unsigned length = gcov_read_unsigned (); |
7d63a2fa | 807 | gcov_position_t base = gcov_position (); |
796621e8 | 808 | |
4977bab6 | 809 | if (tag == GCOV_TAG_FUNCTION) |
b7c9bf28 | 810 | { |
94de45d9 | 811 | char *function_name; |
796621e8 | 812 | unsigned ident, checksum, lineno; |
27283c73 NS |
813 | source_t *src; |
814 | function_t *probe, *prev; | |
4977bab6 | 815 | |
796621e8 | 816 | ident = gcov_read_unsigned (); |
94de45d9 | 817 | checksum = gcov_read_unsigned (); |
796621e8 | 818 | function_name = xstrdup (gcov_read_string ()); |
94de45d9 NS |
819 | src = find_source (gcov_read_string ()); |
820 | lineno = gcov_read_unsigned (); | |
f55ade6e | 821 | |
5ed6ace5 | 822 | fn = XCNEW (function_t); |
4977bab6 | 823 | fn->name = function_name; |
796621e8 | 824 | fn->ident = ident; |
4977bab6 | 825 | fn->checksum = checksum; |
27283c73 NS |
826 | fn->src = src; |
827 | fn->line = lineno; | |
4977bab6 ZW |
828 | |
829 | fn->next = functions; | |
830 | functions = fn; | |
831 | current_tag = tag; | |
f55ade6e | 832 | |
27283c73 NS |
833 | if (lineno >= src->num_lines) |
834 | src->num_lines = lineno + 1; | |
835 | /* Now insert it into the source file's list of | |
836 | functions. Normally functions will be encountered in | |
837 | ascending order, so a simple scan is quick. */ | |
838 | for (probe = src->functions, prev = NULL; | |
839 | probe && probe->line > lineno; | |
840 | prev = probe, probe = probe->line_next) | |
841 | continue; | |
842 | fn->line_next = probe; | |
843 | if (prev) | |
844 | prev->line_next = fn; | |
845 | else | |
846 | src->functions = fn; | |
b7c9bf28 | 847 | } |
4977bab6 | 848 | else if (fn && tag == GCOV_TAG_BLOCKS) |
b7c9bf28 | 849 | { |
4977bab6 | 850 | if (fn->blocks) |
9e637a26 | 851 | fnotice (stderr, "%s:already seen blocks for '%s'\n", |
4977bab6 ZW |
852 | bbg_file_name, fn->name); |
853 | else | |
b7c9bf28 | 854 | { |
330d2e2a | 855 | unsigned ix, num_blocks = GCOV_TAG_BLOCKS_NUM (length); |
27283c73 | 856 | fn->num_blocks = num_blocks; |
f55ade6e | 857 | |
5ed6ace5 | 858 | fn->blocks = XCNEWVEC (block_t, fn->num_blocks); |
27283c73 | 859 | for (ix = 0; ix != num_blocks; ix++) |
94de45d9 | 860 | fn->blocks[ix].flags = gcov_read_unsigned (); |
b7c9bf28 | 861 | } |
4977bab6 ZW |
862 | } |
863 | else if (fn && tag == GCOV_TAG_ARCS) | |
864 | { | |
94de45d9 | 865 | unsigned src = gcov_read_unsigned (); |
330d2e2a | 866 | unsigned num_dests = GCOV_TAG_ARCS_NUM (length); |
4977bab6 | 867 | |
94de45d9 | 868 | if (src >= fn->num_blocks || fn->blocks[src].succ) |
4977bab6 | 869 | goto corrupt; |
f55ade6e | 870 | |
4977bab6 | 871 | while (num_dests--) |
b7c9bf28 | 872 | { |
4977bab6 | 873 | struct arc_info *arc; |
94de45d9 NS |
874 | unsigned dest = gcov_read_unsigned (); |
875 | unsigned flags = gcov_read_unsigned (); | |
f55ade6e | 876 | |
94de45d9 | 877 | if (dest >= fn->num_blocks) |
4977bab6 | 878 | goto corrupt; |
5ed6ace5 | 879 | arc = XCNEW (arc_t); |
f55ade6e | 880 | |
4977bab6 ZW |
881 | arc->dst = &fn->blocks[dest]; |
882 | arc->src = &fn->blocks[src]; | |
f55ade6e | 883 | |
4977bab6 ZW |
884 | arc->count = 0; |
885 | arc->count_valid = 0; | |
886 | arc->on_tree = !!(flags & GCOV_ARC_ON_TREE); | |
887 | arc->fake = !!(flags & GCOV_ARC_FAKE); | |
888 | arc->fall_through = !!(flags & GCOV_ARC_FALLTHROUGH); | |
f55ade6e | 889 | |
4977bab6 ZW |
890 | arc->succ_next = fn->blocks[src].succ; |
891 | fn->blocks[src].succ = arc; | |
892 | fn->blocks[src].num_succ++; | |
f55ade6e | 893 | |
4977bab6 ZW |
894 | arc->pred_next = fn->blocks[dest].pred; |
895 | fn->blocks[dest].pred = arc; | |
896 | fn->blocks[dest].num_pred++; | |
897 | ||
27283c73 NS |
898 | if (arc->fake) |
899 | { | |
900 | if (src) | |
901 | { | |
902 | /* Exceptional exit from this function, the | |
903 | source block must be a call. */ | |
904 | fn->blocks[src].is_call_site = 1; | |
905 | arc->is_call_non_return = 1; | |
906 | } | |
907 | else | |
908 | { | |
909 | /* Non-local return from a callee of this | |
f55ade6e AJ |
910 | function. The destination block is a catch or |
911 | setjmp. */ | |
27283c73 NS |
912 | arc->is_nonlocal_return = 1; |
913 | fn->blocks[dest].is_nonlocal_return = 1; | |
914 | } | |
915 | } | |
f55ade6e | 916 | |
4977bab6 ZW |
917 | if (!arc->on_tree) |
918 | fn->num_counts++; | |
b7c9bf28 | 919 | } |
4977bab6 ZW |
920 | } |
921 | else if (fn && tag == GCOV_TAG_LINES) | |
922 | { | |
94de45d9 | 923 | unsigned blockno = gcov_read_unsigned (); |
5ed6ace5 | 924 | unsigned *line_nos = XCNEWVEC (unsigned, length - 1); |
4977bab6 | 925 | |
94de45d9 | 926 | if (blockno >= fn->num_blocks || fn->blocks[blockno].u.line.encoding) |
4977bab6 | 927 | goto corrupt; |
f55ade6e | 928 | |
4977bab6 | 929 | for (ix = 0; ; ) |
b7c9bf28 | 930 | { |
94de45d9 | 931 | unsigned lineno = gcov_read_unsigned (); |
f55ade6e | 932 | |
4977bab6 | 933 | if (lineno) |
b7c9bf28 | 934 | { |
4977bab6 ZW |
935 | if (!ix) |
936 | { | |
937 | line_nos[ix++] = 0; | |
938 | line_nos[ix++] = src->index; | |
939 | } | |
940 | line_nos[ix++] = lineno; | |
941 | if (lineno >= src->num_lines) | |
942 | src->num_lines = lineno + 1; | |
b7c9bf28 | 943 | } |
4977bab6 ZW |
944 | else |
945 | { | |
94de45d9 | 946 | const char *file_name = gcov_read_string (); |
f55ade6e | 947 | |
4977bab6 | 948 | if (!file_name) |
b7c9bf28 | 949 | break; |
27283c73 | 950 | src = find_source (file_name); |
f55ade6e | 951 | |
4977bab6 ZW |
952 | line_nos[ix++] = 0; |
953 | line_nos[ix++] = src->index; | |
954 | } | |
b7c9bf28 | 955 | } |
f55ade6e | 956 | |
27283c73 NS |
957 | fn->blocks[blockno].u.line.encoding = line_nos; |
958 | fn->blocks[blockno].u.line.num = ix; | |
4977bab6 ZW |
959 | } |
960 | else if (current_tag && !GCOV_TAG_IS_SUBTAG (current_tag, tag)) | |
961 | { | |
962 | fn = NULL; | |
963 | current_tag = 0; | |
964 | } | |
474f141e | 965 | gcov_sync (base, length); |
94de45d9 | 966 | if (gcov_is_error ()) |
00cf2913 NS |
967 | { |
968 | corrupt:; | |
969 | fnotice (stderr, "%s:corrupted\n", bbg_file_name); | |
970 | gcov_close (); | |
971 | return 1; | |
972 | } | |
b7c9bf28 | 973 | } |
546d2adb | 974 | gcov_close (); |
f55ade6e | 975 | |
6614fd40 | 976 | /* We built everything backwards, so nreverse them all. */ |
f55ade6e | 977 | |
4977bab6 ZW |
978 | /* Reverse sources. Not strictly necessary, but we'll then process |
979 | them in the 'expected' order. */ | |
980 | { | |
981 | source_t *src, *src_p, *src_n; | |
982 | ||
983 | for (src_p = NULL, src = sources; src; src_p = src, src = src_n) | |
984 | { | |
985 | src_n = src->next; | |
986 | src->next = src_p; | |
987 | } | |
988 | sources = src_p; | |
989 | } | |
b7c9bf28 | 990 | |
4977bab6 ZW |
991 | /* Reverse functions. */ |
992 | { | |
993 | function_t *fn, *fn_p, *fn_n; | |
b7c9bf28 | 994 | |
1a9075e2 TG |
995 | for (fn_p = old_functions_head, fn = functions; |
996 | fn != old_functions_head; | |
997 | fn_p = fn, fn = fn_n) | |
4977bab6 ZW |
998 | { |
999 | unsigned ix; | |
f55ade6e | 1000 | |
4977bab6 ZW |
1001 | fn_n = fn->next; |
1002 | fn->next = fn_p; | |
b7c9bf28 | 1003 | |
f9da5064 | 1004 | /* Reverse the arcs. */ |
4977bab6 ZW |
1005 | for (ix = fn->num_blocks; ix--;) |
1006 | { | |
1007 | arc_t *arc, *arc_p, *arc_n; | |
f55ade6e | 1008 | |
4977bab6 ZW |
1009 | for (arc_p = NULL, arc = fn->blocks[ix].succ; arc; |
1010 | arc_p = arc, arc = arc_n) | |
1011 | { | |
1012 | arc_n = arc->succ_next; | |
1013 | arc->succ_next = arc_p; | |
1014 | } | |
1015 | fn->blocks[ix].succ = arc_p; | |
1016 | ||
1017 | for (arc_p = NULL, arc = fn->blocks[ix].pred; arc; | |
1018 | arc_p = arc, arc = arc_n) | |
1019 | { | |
1020 | arc_n = arc->pred_next; | |
1021 | arc->pred_next = arc_p; | |
1022 | } | |
1023 | fn->blocks[ix].pred = arc_p; | |
1024 | } | |
1025 | } | |
1026 | functions = fn_p; | |
1027 | } | |
1028 | return 0; | |
b7c9bf28 | 1029 | } |
86144b75 | 1030 | |
4977bab6 | 1031 | /* Reads profiles from the count file and attach to each |
272d0bee | 1032 | function. Return nonzero if fatal error. */ |
86144b75 | 1033 | |
4977bab6 | 1034 | static int |
f55ade6e | 1035 | read_count_file (void) |
86144b75 | 1036 | { |
4977bab6 | 1037 | unsigned ix; |
94de45d9 | 1038 | unsigned version; |
7d63a2fa | 1039 | unsigned tag; |
4977bab6 | 1040 | function_t *fn = NULL; |
7d63a2fa | 1041 | int error = 0; |
4977bab6 | 1042 | |
546d2adb | 1043 | if (!gcov_open (da_file_name, 1)) |
86144b75 | 1044 | { |
80b3502b NS |
1045 | fnotice (stderr, "%s:cannot open data file, assuming not executed\n", |
1046 | da_file_name); | |
1047 | no_data_file = 1; | |
1048 | return 0; | |
4977bab6 | 1049 | } |
160e2e4f | 1050 | if (!gcov_magic (gcov_read_unsigned (), GCOV_DATA_MAGIC)) |
4977bab6 ZW |
1051 | { |
1052 | fnotice (stderr, "%s:not a gcov data file\n", da_file_name); | |
1053 | cleanup:; | |
546d2adb | 1054 | gcov_close (); |
4977bab6 ZW |
1055 | return 1; |
1056 | } | |
94de45d9 NS |
1057 | version = gcov_read_unsigned (); |
1058 | if (version != GCOV_VERSION) | |
4977bab6 | 1059 | { |
330d2e2a NS |
1060 | char v[4], e[4]; |
1061 | ||
1062 | GCOV_UNSIGNED2STRING (v, version); | |
1063 | GCOV_UNSIGNED2STRING (e, GCOV_VERSION); | |
b8698a0f | 1064 | |
9e637a26 | 1065 | fnotice (stderr, "%s:version '%.4s', prefer version '%.4s'\n", |
330d2e2a | 1066 | da_file_name, v, e); |
86144b75 | 1067 | } |
dd486eb2 NS |
1068 | tag = gcov_read_unsigned (); |
1069 | if (tag != bbg_stamp) | |
1070 | { | |
1071 | fnotice (stderr, "%s:stamp mismatch with graph file\n", da_file_name); | |
1072 | goto cleanup; | |
1073 | } | |
f55ade6e | 1074 | |
7d63a2fa | 1075 | while ((tag = gcov_read_unsigned ())) |
4977bab6 | 1076 | { |
94de45d9 NS |
1077 | unsigned length = gcov_read_unsigned (); |
1078 | unsigned long base = gcov_position (); | |
94de45d9 | 1079 | |
27283c73 | 1080 | if (tag == GCOV_TAG_OBJECT_SUMMARY) |
94de45d9 | 1081 | gcov_read_summary (&object_summary); |
cdb23767 | 1082 | else if (tag == GCOV_TAG_PROGRAM_SUMMARY) |
94de45d9 | 1083 | program_count++; |
27283c73 | 1084 | else if (tag == GCOV_TAG_FUNCTION) |
86144b75 | 1085 | { |
e1b7793c ILT |
1086 | { |
1087 | unsigned ident = gcov_read_unsigned (); | |
1088 | struct function_info *fn_n = functions; | |
4977bab6 | 1089 | |
e1b7793c ILT |
1090 | /* Try to find the function in the list. |
1091 | To speed up the search, first start from the last function | |
1092 | found. */ | |
1093 | for (fn = fn ? fn->next : NULL; ; fn = fn->next) | |
1094 | { | |
1095 | if (fn) | |
1096 | ; | |
1097 | else if ((fn = fn_n)) | |
1098 | fn_n = NULL; | |
1099 | else | |
1100 | { | |
1101 | fnotice (stderr, "%s:unknown function '%u'\n", | |
1102 | da_file_name, ident); | |
1103 | break; | |
1104 | } | |
1105 | if (fn->ident == ident) | |
4977bab6 | 1106 | break; |
e1b7793c ILT |
1107 | } |
1108 | } | |
4977bab6 ZW |
1109 | |
1110 | if (!fn) | |
1111 | ; | |
94de45d9 | 1112 | else if (gcov_read_unsigned () != fn->checksum) |
86144b75 | 1113 | { |
4977bab6 | 1114 | mismatch:; |
9e637a26 | 1115 | fnotice (stderr, "%s:profile mismatch for '%s'\n", |
94de45d9 | 1116 | da_file_name, fn->name); |
4977bab6 ZW |
1117 | goto cleanup; |
1118 | } | |
1119 | } | |
cdb23767 | 1120 | else if (tag == GCOV_TAG_FOR_COUNTER (GCOV_COUNTER_ARCS) && fn) |
4977bab6 | 1121 | { |
330d2e2a | 1122 | if (length != GCOV_TAG_COUNTER_LENGTH (fn->num_counts)) |
4977bab6 | 1123 | goto mismatch; |
f55ade6e | 1124 | |
4977bab6 | 1125 | if (!fn->counts) |
5ed6ace5 | 1126 | fn->counts = XCNEWVEC (gcov_type, fn->num_counts); |
f55ade6e | 1127 | |
4977bab6 | 1128 | for (ix = 0; ix != fn->num_counts; ix++) |
94de45d9 NS |
1129 | fn->counts[ix] += gcov_read_counter (); |
1130 | } | |
474f141e | 1131 | gcov_sync (base, length); |
94de45d9 | 1132 | if ((error = gcov_is_error ())) |
00cf2913 NS |
1133 | { |
1134 | fnotice (stderr, error < 0 ? "%s:overflowed\n" : "%s:corrupted\n", | |
1135 | da_file_name); | |
1136 | goto cleanup; | |
1137 | } | |
7d63a2fa | 1138 | } |
f55ade6e | 1139 | |
546d2adb | 1140 | gcov_close (); |
4977bab6 | 1141 | return 0; |
86144b75 DE |
1142 | } |
1143 | ||
4977bab6 ZW |
1144 | /* Solve the flow graph. Propagate counts from the instrumented arcs |
1145 | to the blocks and the uninstrumented arcs. */ | |
86144b75 DE |
1146 | |
1147 | static void | |
f55ade6e | 1148 | solve_flow_graph (function_t *fn) |
86144b75 | 1149 | { |
4977bab6 ZW |
1150 | unsigned ix; |
1151 | arc_t *arc; | |
1152 | gcov_type *count_ptr = fn->counts; | |
27283c73 | 1153 | block_t *blk; |
32dd366d KH |
1154 | block_t *valid_blocks = NULL; /* valid, but unpropagated blocks. */ |
1155 | block_t *invalid_blocks = NULL; /* invalid, but inferable blocks. */ | |
f55ade6e | 1156 | |
4977bab6 | 1157 | if (fn->num_blocks < 2) |
9e637a26 | 1158 | fnotice (stderr, "%s:'%s' lacks entry and/or exit blocks\n", |
4977bab6 ZW |
1159 | bbg_file_name, fn->name); |
1160 | else | |
86144b75 | 1161 | { |
4977bab6 | 1162 | if (fn->blocks[0].num_pred) |
9e637a26 | 1163 | fnotice (stderr, "%s:'%s' has arcs to entry block\n", |
4977bab6 | 1164 | bbg_file_name, fn->name); |
86144b75 | 1165 | else |
4977bab6 ZW |
1166 | /* We can't deduce the entry block counts from the lack of |
1167 | predecessors. */ | |
1168 | fn->blocks[0].num_pred = ~(unsigned)0; | |
f55ade6e | 1169 | |
4977bab6 | 1170 | if (fn->blocks[fn->num_blocks - 1].num_succ) |
9e637a26 | 1171 | fnotice (stderr, "%s:'%s' has arcs from exit block\n", |
4977bab6 ZW |
1172 | bbg_file_name, fn->name); |
1173 | else | |
1174 | /* Likewise, we can't deduce exit block counts from the lack | |
1175 | of its successors. */ | |
1176 | fn->blocks[fn->num_blocks - 1].num_succ = ~(unsigned)0; | |
86144b75 DE |
1177 | } |
1178 | ||
4977bab6 ZW |
1179 | /* Propagate the measured counts, this must be done in the same |
1180 | order as the code in profile.c */ | |
27283c73 | 1181 | for (ix = 0, blk = fn->blocks; ix != fn->num_blocks; ix++, blk++) |
86144b75 | 1182 | { |
4977bab6 ZW |
1183 | block_t const *prev_dst = NULL; |
1184 | int out_of_order = 0; | |
27283c73 | 1185 | int non_fake_succ = 0; |
f55ade6e | 1186 | |
27283c73 | 1187 | for (arc = blk->succ; arc; arc = arc->succ_next) |
86144b75 | 1188 | { |
27283c73 NS |
1189 | if (!arc->fake) |
1190 | non_fake_succ++; | |
f55ade6e | 1191 | |
4977bab6 | 1192 | if (!arc->on_tree) |
86144b75 | 1193 | { |
4977bab6 ZW |
1194 | if (count_ptr) |
1195 | arc->count = *count_ptr++; | |
1196 | arc->count_valid = 1; | |
27283c73 | 1197 | blk->num_succ--; |
4977bab6 | 1198 | arc->dst->num_pred--; |
86144b75 | 1199 | } |
4977bab6 ZW |
1200 | if (prev_dst && prev_dst > arc->dst) |
1201 | out_of_order = 1; | |
1202 | prev_dst = arc->dst; | |
86144b75 | 1203 | } |
27283c73 NS |
1204 | if (non_fake_succ == 1) |
1205 | { | |
1206 | /* If there is only one non-fake exit, it is an | |
1207 | unconditional branch. */ | |
1208 | for (arc = blk->succ; arc; arc = arc->succ_next) | |
1209 | if (!arc->fake) | |
1210 | { | |
1211 | arc->is_unconditional = 1; | |
1212 | /* If this block is instrumenting a call, it might be | |
e0bb17a8 | 1213 | an artificial block. It is not artificial if it has |
10b7602f NS |
1214 | a non-fallthrough exit, or the destination of this |
1215 | arc has more than one entry. Mark the destination | |
1216 | block as a return site, if none of those conditions | |
1217 | hold. */ | |
1218 | if (blk->is_call_site && arc->fall_through | |
1219 | && arc->dst->pred == arc && !arc->pred_next) | |
1220 | arc->dst->is_call_return = 1; | |
27283c73 NS |
1221 | } |
1222 | } | |
f55ade6e | 1223 | |
4977bab6 ZW |
1224 | /* Sort the successor arcs into ascending dst order. profile.c |
1225 | normally produces arcs in the right order, but sometimes with | |
1226 | one or two out of order. We're not using a particularly | |
32dd366d | 1227 | smart sort. */ |
4977bab6 | 1228 | if (out_of_order) |
86144b75 | 1229 | { |
27283c73 | 1230 | arc_t *start = blk->succ; |
4977bab6 | 1231 | unsigned changes = 1; |
f55ade6e | 1232 | |
4977bab6 ZW |
1233 | while (changes) |
1234 | { | |
1235 | arc_t *arc, *arc_p, *arc_n; | |
f55ade6e | 1236 | |
4977bab6 ZW |
1237 | changes = 0; |
1238 | for (arc_p = NULL, arc = start; (arc_n = arc->succ_next);) | |
1239 | { | |
1240 | if (arc->dst > arc_n->dst) | |
1241 | { | |
1242 | changes = 1; | |
1243 | if (arc_p) | |
1244 | arc_p->succ_next = arc_n; | |
1245 | else | |
1246 | start = arc_n; | |
1247 | arc->succ_next = arc_n->succ_next; | |
1248 | arc_n->succ_next = arc; | |
1249 | arc_p = arc_n; | |
1250 | } | |
1251 | else | |
1252 | { | |
1253 | arc_p = arc; | |
1254 | arc = arc_n; | |
1255 | } | |
1256 | } | |
1257 | } | |
27283c73 | 1258 | blk->succ = start; |
86144b75 | 1259 | } |
f55ade6e | 1260 | |
4977bab6 ZW |
1261 | /* Place it on the invalid chain, it will be ignored if that's |
1262 | wrong. */ | |
27283c73 NS |
1263 | blk->invalid_chain = 1; |
1264 | blk->chain = invalid_blocks; | |
1265 | invalid_blocks = blk; | |
4977bab6 ZW |
1266 | } |
1267 | ||
1268 | while (invalid_blocks || valid_blocks) | |
1269 | { | |
4977bab6 | 1270 | while ((blk = invalid_blocks)) |
86144b75 | 1271 | { |
4977bab6 ZW |
1272 | gcov_type total = 0; |
1273 | const arc_t *arc; | |
f55ade6e | 1274 | |
4977bab6 ZW |
1275 | invalid_blocks = blk->chain; |
1276 | blk->invalid_chain = 0; | |
1277 | if (!blk->num_succ) | |
1278 | for (arc = blk->succ; arc; arc = arc->succ_next) | |
1279 | total += arc->count; | |
1280 | else if (!blk->num_pred) | |
1281 | for (arc = blk->pred; arc; arc = arc->pred_next) | |
1282 | total += arc->count; | |
1283 | else | |
1284 | continue; | |
f55ade6e | 1285 | |
4977bab6 ZW |
1286 | blk->count = total; |
1287 | blk->count_valid = 1; | |
1288 | blk->chain = valid_blocks; | |
1289 | blk->valid_chain = 1; | |
1290 | valid_blocks = blk; | |
86144b75 | 1291 | } |
4977bab6 | 1292 | while ((blk = valid_blocks)) |
86144b75 | 1293 | { |
4977bab6 ZW |
1294 | gcov_type total; |
1295 | arc_t *arc, *inv_arc; | |
1296 | ||
1297 | valid_blocks = blk->chain; | |
1298 | blk->valid_chain = 0; | |
1299 | if (blk->num_succ == 1) | |
1300 | { | |
1301 | block_t *dst; | |
f55ade6e | 1302 | |
4977bab6 ZW |
1303 | total = blk->count; |
1304 | inv_arc = NULL; | |
1305 | for (arc = blk->succ; arc; arc = arc->succ_next) | |
1306 | { | |
1307 | total -= arc->count; | |
1308 | if (!arc->count_valid) | |
1309 | inv_arc = arc; | |
1310 | } | |
1311 | dst = inv_arc->dst; | |
1312 | inv_arc->count_valid = 1; | |
1313 | inv_arc->count = total; | |
1314 | blk->num_succ--; | |
1315 | dst->num_pred--; | |
1316 | if (dst->count_valid) | |
1317 | { | |
1318 | if (dst->num_pred == 1 && !dst->valid_chain) | |
1319 | { | |
1320 | dst->chain = valid_blocks; | |
1321 | dst->valid_chain = 1; | |
1322 | valid_blocks = dst; | |
1323 | } | |
1324 | } | |
1325 | else | |
1326 | { | |
1327 | if (!dst->num_pred && !dst->invalid_chain) | |
1328 | { | |
1329 | dst->chain = invalid_blocks; | |
1330 | dst->invalid_chain = 1; | |
1331 | invalid_blocks = dst; | |
1332 | } | |
1333 | } | |
1334 | } | |
1335 | if (blk->num_pred == 1) | |
1336 | { | |
1337 | block_t *src; | |
f55ade6e | 1338 | |
4977bab6 ZW |
1339 | total = blk->count; |
1340 | inv_arc = NULL; | |
1341 | for (arc = blk->pred; arc; arc = arc->pred_next) | |
1342 | { | |
1343 | total -= arc->count; | |
1344 | if (!arc->count_valid) | |
1345 | inv_arc = arc; | |
1346 | } | |
1347 | src = inv_arc->src; | |
1348 | inv_arc->count_valid = 1; | |
1349 | inv_arc->count = total; | |
1350 | blk->num_pred--; | |
1351 | src->num_succ--; | |
1352 | if (src->count_valid) | |
1353 | { | |
1354 | if (src->num_succ == 1 && !src->valid_chain) | |
1355 | { | |
1356 | src->chain = valid_blocks; | |
1357 | src->valid_chain = 1; | |
1358 | valid_blocks = src; | |
1359 | } | |
1360 | } | |
1361 | else | |
1362 | { | |
1363 | if (!src->num_succ && !src->invalid_chain) | |
1364 | { | |
1365 | src->chain = invalid_blocks; | |
1366 | src->invalid_chain = 1; | |
1367 | invalid_blocks = src; | |
1368 | } | |
1369 | } | |
1370 | } | |
86144b75 DE |
1371 | } |
1372 | } | |
f55ade6e | 1373 | |
4977bab6 ZW |
1374 | /* If the graph has been correctly solved, every block will have a |
1375 | valid count. */ | |
1376 | for (ix = 0; ix < fn->num_blocks; ix++) | |
1377 | if (!fn->blocks[ix].count_valid) | |
1378 | { | |
9e637a26 | 1379 | fnotice (stderr, "%s:graph is unsolvable for '%s'\n", |
4977bab6 ZW |
1380 | bbg_file_name, fn->name); |
1381 | break; | |
1382 | } | |
86144b75 | 1383 | } |
4977bab6 | 1384 | |
86144b75 | 1385 | \f |
86144b75 | 1386 | |
4977bab6 | 1387 | /* Increment totals in COVERAGE according to arc ARC. */ |
8b219a76 NS |
1388 | |
1389 | static void | |
f55ade6e | 1390 | add_branch_counts (coverage_t *coverage, const arc_t *arc) |
8b219a76 | 1391 | { |
27283c73 | 1392 | if (arc->is_call_non_return) |
8b219a76 | 1393 | { |
4977bab6 ZW |
1394 | coverage->calls++; |
1395 | if (arc->src->count) | |
1396 | coverage->calls_executed++; | |
8b219a76 | 1397 | } |
27283c73 | 1398 | else if (!arc->is_unconditional) |
8b219a76 | 1399 | { |
4977bab6 ZW |
1400 | coverage->branches++; |
1401 | if (arc->src->count) | |
1402 | coverage->branches_executed++; | |
1403 | if (arc->count) | |
1404 | coverage->branches_taken++; | |
86144b75 DE |
1405 | } |
1406 | } | |
1407 | ||
37b8715b NS |
1408 | /* Format a HOST_WIDE_INT as either a percent ratio, or absolute |
1409 | count. If dp >= 0, format TOP/BOTTOM * 100 to DP decimal places. | |
1410 | If DP is zero, no decimal point is printed. Only print 100% when | |
1411 | TOP==BOTTOM and only print 0% when TOP=0. If dp < 0, then simply | |
1412 | format TOP. Return pointer to a static string. */ | |
1413 | ||
1414 | static char const * | |
f55ade6e | 1415 | format_gcov (gcov_type top, gcov_type bottom, int dp) |
37b8715b NS |
1416 | { |
1417 | static char buffer[20]; | |
f55ade6e | 1418 | |
37b8715b NS |
1419 | if (dp >= 0) |
1420 | { | |
1421 | float ratio = bottom ? (float)top / bottom : 0; | |
1422 | int ix; | |
1423 | unsigned limit = 100; | |
1424 | unsigned percent; | |
f55ade6e | 1425 | |
37b8715b NS |
1426 | for (ix = dp; ix--; ) |
1427 | limit *= 10; | |
f55ade6e | 1428 | |
d19202ba NS |
1429 | percent = (unsigned) (ratio * limit + (float)0.5); |
1430 | if (percent <= 0 && top) | |
37b8715b | 1431 | percent = 1; |
d19202ba | 1432 | else if (percent >= limit && top != bottom) |
37b8715b NS |
1433 | percent = limit - 1; |
1434 | ix = sprintf (buffer, "%.*u%%", dp + 1, percent); | |
1435 | if (dp) | |
1436 | { | |
1437 | dp++; | |
1438 | do | |
1439 | { | |
1440 | buffer[ix+1] = buffer[ix]; | |
1441 | ix--; | |
1442 | } | |
1443 | while (dp--); | |
1444 | buffer[ix + 1] = '.'; | |
1445 | } | |
1446 | } | |
1447 | else | |
4977bab6 | 1448 | sprintf (buffer, HOST_WIDEST_INT_PRINT_DEC, (HOST_WIDEST_INT)top); |
f55ade6e | 1449 | |
37b8715b NS |
1450 | return buffer; |
1451 | } | |
1452 | ||
1453 | ||
86144b75 DE |
1454 | /* Output summary info for a function. */ |
1455 | ||
1456 | static void | |
f55ade6e | 1457 | function_summary (const coverage_t *coverage, const char *title) |
86144b75 | 1458 | { |
9e637a26 | 1459 | fnotice (stdout, "%s '%s'\n", title, coverage->name); |
4977bab6 ZW |
1460 | |
1461 | if (coverage->lines) | |
1462 | fnotice (stdout, "Lines executed:%s of %d\n", | |
1463 | format_gcov (coverage->lines_executed, coverage->lines, 2), | |
1464 | coverage->lines); | |
86144b75 | 1465 | else |
1457ebf9 | 1466 | fnotice (stdout, "No executable lines\n"); |
86144b75 | 1467 | |
4977bab6 | 1468 | if (flag_branches) |
86144b75 | 1469 | { |
4977bab6 | 1470 | if (coverage->branches) |
86144b75 | 1471 | { |
4977bab6 ZW |
1472 | fnotice (stdout, "Branches executed:%s of %d\n", |
1473 | format_gcov (coverage->branches_executed, | |
1474 | coverage->branches, 2), | |
1475 | coverage->branches); | |
1476 | fnotice (stdout, "Taken at least once:%s of %d\n", | |
1477 | format_gcov (coverage->branches_taken, | |
1478 | coverage->branches, 2), | |
1479 | coverage->branches); | |
86144b75 DE |
1480 | } |
1481 | else | |
4977bab6 ZW |
1482 | fnotice (stdout, "No branches\n"); |
1483 | if (coverage->calls) | |
1484 | fnotice (stdout, "Calls executed:%s of %d\n", | |
1485 | format_gcov (coverage->calls_executed, coverage->calls, 2), | |
1486 | coverage->calls); | |
86144b75 | 1487 | else |
4977bab6 | 1488 | fnotice (stdout, "No calls\n"); |
8b219a76 NS |
1489 | } |
1490 | } | |
1491 | ||
1492 | /* Generate an output file name. LONG_OUTPUT_NAMES and PRESERVE_PATHS | |
1493 | affect name generation. With preserve_paths we create a filename | |
1494 | from all path components of the source file, replacing '/' with | |
1495 | '#', without it we simply take the basename component. With | |
1496 | long_output_names we prepend the processed name of the input file | |
1497 | to each output name (except when the current source file is the | |
1498 | input file, so you don't get a double concatenation). The two | |
1499 | components are separated by '##'. Also '.' filename components are | |
4b7e68e7 | 1500 | removed and '..' components are renamed to '^'. */ |
8b219a76 NS |
1501 | |
1502 | static char * | |
f55ade6e | 1503 | make_gcov_file_name (const char *input_name, const char *src_name) |
8b219a76 | 1504 | { |
2f07423c | 1505 | const char *cptr; |
1a9075e2 | 1506 | char *name; |
f55ade6e | 1507 | |
1a9075e2 | 1508 | if (flag_long_names && input_name && strcmp (src_name, input_name)) |
8b219a76 | 1509 | { |
1a9075e2 TG |
1510 | name = XNEWVEC (char, strlen (src_name) + strlen (input_name) + 10); |
1511 | name[0] = 0; | |
8b219a76 | 1512 | /* Generate the input filename part. */ |
2f07423c PO |
1513 | cptr = flag_preserve_paths ? NULL : lbasename (input_name); |
1514 | strcat (name, cptr ? cptr : input_name); | |
8b219a76 NS |
1515 | strcat (name, "##"); |
1516 | } | |
1a9075e2 TG |
1517 | else |
1518 | { | |
1519 | name = XNEWVEC (char, strlen (src_name) + 10); | |
1520 | name[0] = 0; | |
1521 | } | |
f55ade6e | 1522 | |
4b7e68e7 | 1523 | /* Generate the source filename part. */ |
2f07423c PO |
1524 | |
1525 | cptr = flag_preserve_paths ? NULL : lbasename (src_name); | |
1526 | strcat (name, cptr ? cptr : src_name); | |
f55ade6e | 1527 | |
4977bab6 | 1528 | if (flag_preserve_paths) |
8b219a76 | 1529 | { |
2f07423c PO |
1530 | /* Convert '/' and '\' to '#', remove '/./', convert '/../' to '/^/', |
1531 | convert ':' to '~' on DOS based file system. */ | |
1532 | char *pnew = name, *pold = name; | |
f55ade6e | 1533 | |
2f07423c | 1534 | /* First check for leading drive separator. */ |
f55ade6e | 1535 | |
2f07423c PO |
1536 | while (*pold != '\0') |
1537 | { | |
1538 | if (*pold == '/' || *pold == '\\') | |
f55ade6e | 1539 | { |
2f07423c PO |
1540 | *pnew++ = '#'; |
1541 | pold++; | |
f55ade6e | 1542 | } |
2f07423c PO |
1543 | #if defined (HAVE_DOS_BASED_FILE_SYSTEM) |
1544 | else if (*pold == ':') | |
f55ade6e | 1545 | { |
2f07423c PO |
1546 | *pnew++ = '~'; |
1547 | pold++; | |
f55ade6e | 1548 | } |
2f07423c PO |
1549 | #endif |
1550 | else if ((*pold == '/' && strstr (pold, "/./") == pold) | |
1551 | || (*pold == '\\' && strstr (pold, "\\.\\") == pold)) | |
1552 | pold += 3; | |
1553 | else if (*pold == '/' && strstr (pold, "/../") == pold) | |
f55ade6e | 1554 | { |
2f07423c PO |
1555 | strcpy (pnew, "/^/"); |
1556 | pnew += 3; | |
1557 | pold += 4; | |
f55ade6e | 1558 | } |
2f07423c PO |
1559 | else if (*pold == '\\' && strstr (pold, "\\..\\") == pold) |
1560 | { | |
1561 | strcpy (pnew, "\\^\\"); | |
1562 | pnew += 3; | |
1563 | pold += 4; | |
1564 | } | |
1565 | else | |
1566 | *pnew++ = *pold++; | |
f55ade6e | 1567 | } |
2f07423c PO |
1568 | |
1569 | *pnew = '\0'; | |
86144b75 | 1570 | } |
f55ade6e | 1571 | |
8b219a76 NS |
1572 | strcat (name, ".gcov"); |
1573 | return name; | |
86144b75 DE |
1574 | } |
1575 | ||
4977bab6 | 1576 | /* Scan through the bb_data for each line in the block, increment |
8b219a76 NS |
1577 | the line number execution count indicated by the execution count of |
1578 | the appropriate basic block. */ | |
86144b75 DE |
1579 | |
1580 | static void | |
f55ade6e | 1581 | add_line_counts (coverage_t *coverage, function_t *fn) |
86144b75 | 1582 | { |
4977bab6 | 1583 | unsigned ix; |
beb235f8 | 1584 | line_t *line = NULL; /* This is propagated from one iteration to the |
4977bab6 ZW |
1585 | next. */ |
1586 | ||
32dd366d | 1587 | /* Scan each basic block. */ |
4977bab6 | 1588 | for (ix = 0; ix != fn->num_blocks; ix++) |
86144b75 | 1589 | { |
27283c73 | 1590 | block_t *block = &fn->blocks[ix]; |
4977bab6 ZW |
1591 | unsigned *encoding; |
1592 | const source_t *src = NULL; | |
1593 | unsigned jx; | |
1594 | ||
27283c73 NS |
1595 | if (block->count && ix && ix + 1 != fn->num_blocks) |
1596 | fn->blocks_executed++; | |
1597 | for (jx = 0, encoding = block->u.line.encoding; | |
1598 | jx != block->u.line.num; jx++, encoding++) | |
4977bab6 ZW |
1599 | if (!*encoding) |
1600 | { | |
1601 | unsigned src_n = *++encoding; | |
86144b75 | 1602 | |
4977bab6 ZW |
1603 | for (src = sources; src->index != src_n; src = src->next) |
1604 | continue; | |
1605 | jx++; | |
1606 | } | |
1607 | else | |
1608 | { | |
1609 | line = &src->lines[*encoding]; | |
1610 | ||
1611 | if (coverage) | |
1612 | { | |
1613 | if (!line->exists) | |
1614 | coverage->lines++; | |
27283c73 | 1615 | if (!line->count && block->count) |
4977bab6 ZW |
1616 | coverage->lines_executed++; |
1617 | } | |
1618 | line->exists = 1; | |
1619 | line->count += block->count; | |
1620 | } | |
27283c73 | 1621 | free (block->u.line.encoding); |
10b7602f NS |
1622 | block->u.cycle.arc = NULL; |
1623 | block->u.cycle.ident = ~0U; | |
f55ade6e | 1624 | |
27283c73 NS |
1625 | if (!ix || ix + 1 == fn->num_blocks) |
1626 | /* Entry or exit block */; | |
1627 | else if (flag_all_blocks) | |
86144b75 | 1628 | { |
10b7602f | 1629 | line_t *block_line = line ? line : &fn->src->lines[fn->line]; |
f55ade6e | 1630 | |
10b7602f NS |
1631 | block->chain = block_line->u.blocks; |
1632 | block_line->u.blocks = block; | |
27283c73 NS |
1633 | } |
1634 | else if (flag_branches) | |
1635 | { | |
1636 | arc_t *arc; | |
1637 | ||
4977bab6 | 1638 | for (arc = block->succ; arc; arc = arc->succ_next) |
86144b75 | 1639 | { |
27283c73 NS |
1640 | arc->line_next = line->u.branches; |
1641 | line->u.branches = arc; | |
1642 | if (coverage && !arc->is_unconditional) | |
4977bab6 | 1643 | add_branch_counts (coverage, arc); |
86144b75 | 1644 | } |
8b219a76 NS |
1645 | } |
1646 | } | |
4977bab6 | 1647 | if (!line) |
9e637a26 | 1648 | fnotice (stderr, "%s:no lines for '%s'\n", bbg_file_name, fn->name); |
4977bab6 ZW |
1649 | } |
1650 | ||
32dd366d | 1651 | /* Accumulate the line counts of a file. */ |
4977bab6 ZW |
1652 | |
1653 | static void | |
f55ade6e | 1654 | accumulate_line_counts (source_t *src) |
4977bab6 ZW |
1655 | { |
1656 | line_t *line; | |
27283c73 | 1657 | function_t *fn, *fn_p, *fn_n; |
4977bab6 | 1658 | unsigned ix; |
27283c73 NS |
1659 | |
1660 | /* Reverse the function order. */ | |
1661 | for (fn = src->functions, fn_p = NULL; fn; | |
1662 | fn_p = fn, fn = fn_n) | |
1663 | { | |
1664 | fn_n = fn->line_next; | |
1665 | fn->line_next = fn_p; | |
1666 | } | |
1667 | src->functions = fn_p; | |
f55ade6e | 1668 | |
4977bab6 | 1669 | for (ix = src->num_lines, line = src->lines; ix--; line++) |
8b219a76 | 1670 | { |
27283c73 | 1671 | if (!flag_all_blocks) |
8b219a76 | 1672 | { |
27283c73 | 1673 | arc_t *arc, *arc_p, *arc_n; |
f55ade6e | 1674 | |
27283c73 NS |
1675 | /* Total and reverse the branch information. */ |
1676 | for (arc = line->u.branches, arc_p = NULL; arc; | |
1677 | arc_p = arc, arc = arc_n) | |
1678 | { | |
1679 | arc_n = arc->line_next; | |
1680 | arc->line_next = arc_p; | |
f55ade6e | 1681 | |
27283c73 NS |
1682 | add_branch_counts (&src->coverage, arc); |
1683 | } | |
1684 | line->u.branches = arc_p; | |
8b219a76 | 1685 | } |
27283c73 NS |
1686 | else if (line->u.blocks) |
1687 | { | |
1688 | /* The user expects the line count to be the number of times | |
1689 | a line has been executed. Simply summing the block count | |
1690 | will give an artificially high number. The Right Thing | |
10b7602f NS |
1691 | is to sum the entry counts to the graph of blocks on this |
1692 | line, then find the elementary cycles of the local graph | |
1693 | and add the transition counts of those cycles. */ | |
27283c73 | 1694 | block_t *block, *block_p, *block_n; |
27283c73 | 1695 | gcov_type count = 0; |
f55ade6e | 1696 | |
f9da5064 | 1697 | /* Reverse the block information. */ |
27283c73 NS |
1698 | for (block = line->u.blocks, block_p = NULL; block; |
1699 | block_p = block, block = block_n) | |
1700 | { | |
1701 | block_n = block->chain; | |
1702 | block->chain = block_p; | |
10b7602f | 1703 | block->u.cycle.ident = ix; |
27283c73 NS |
1704 | } |
1705 | line->u.blocks = block_p; | |
f55ade6e | 1706 | |
10b7602f NS |
1707 | /* Sum the entry arcs. */ |
1708 | for (block = line->u.blocks; block; block = block->chain) | |
1709 | { | |
1710 | arc_t *arc; | |
86144b75 | 1711 | |
10b7602f NS |
1712 | for (arc = block->pred; arc; arc = arc->pred_next) |
1713 | { | |
1714 | if (arc->src->u.cycle.ident != ix) | |
1715 | count += arc->count; | |
1716 | if (flag_branches) | |
1717 | add_branch_counts (&src->coverage, arc); | |
1718 | } | |
3d7ca167 ZD |
1719 | |
1720 | /* Initialize the cs_count. */ | |
1721 | for (arc = block->succ; arc; arc = arc->succ_next) | |
1722 | arc->cs_count = arc->count; | |
10b7602f NS |
1723 | } |
1724 | ||
1725 | /* Find the loops. This uses the algorithm described in | |
1726 | Tiernan 'An Efficient Search Algorithm to Find the | |
1727 | Elementary Circuits of a Graph', CACM Dec 1970. We hold | |
1728 | the P array by having each block point to the arc that | |
1729 | connects to the previous block. The H array is implicitly | |
1730 | held because of the arc ordering, and the block's | |
1731 | previous arc pointer. | |
1732 | ||
1733 | Although the algorithm is O(N^3) for highly connected | |
1734 | graphs, at worst we'll have O(N^2), as most blocks have | |
1735 | only one or two exits. Most graphs will be small. | |
1736 | ||
1737 | For each loop we find, locate the arc with the smallest | |
1738 | transition count, and add that to the cumulative | |
3d7ca167 ZD |
1739 | count. Decrease flow over the cycle and remove the arc |
1740 | from consideration. */ | |
10b7602f | 1741 | for (block = line->u.blocks; block; block = block->chain) |
27283c73 | 1742 | { |
10b7602f NS |
1743 | block_t *head = block; |
1744 | arc_t *arc; | |
f55ade6e | 1745 | |
10b7602f NS |
1746 | next_vertex:; |
1747 | arc = head->succ; | |
1748 | current_vertex:; | |
1749 | while (arc) | |
27283c73 | 1750 | { |
10b7602f NS |
1751 | block_t *dst = arc->dst; |
1752 | if (/* Already used that arc. */ | |
1753 | arc->cycle | |
1754 | /* Not to same graph, or before first vertex. */ | |
1755 | || dst->u.cycle.ident != ix | |
1756 | /* Already in path. */ | |
1757 | || dst->u.cycle.arc) | |
1758 | { | |
1759 | arc = arc->succ_next; | |
1760 | continue; | |
1761 | } | |
f55ade6e | 1762 | |
10b7602f | 1763 | if (dst == block) |
27283c73 | 1764 | { |
10b7602f | 1765 | /* Found a closing arc. */ |
3d7ca167 | 1766 | gcov_type cycle_count = arc->cs_count; |
10b7602f NS |
1767 | arc_t *cycle_arc = arc; |
1768 | arc_t *probe_arc; | |
f55ade6e | 1769 | |
71c0e7fc | 1770 | /* Locate the smallest arc count of the loop. */ |
10b7602f NS |
1771 | for (dst = head; (probe_arc = dst->u.cycle.arc); |
1772 | dst = probe_arc->src) | |
3d7ca167 | 1773 | if (cycle_count > probe_arc->cs_count) |
10b7602f | 1774 | { |
3d7ca167 | 1775 | cycle_count = probe_arc->cs_count; |
10b7602f NS |
1776 | cycle_arc = probe_arc; |
1777 | } | |
f55ade6e | 1778 | |
10b7602f NS |
1779 | count += cycle_count; |
1780 | cycle_arc->cycle = 1; | |
3d7ca167 ZD |
1781 | |
1782 | /* Remove the flow from the cycle. */ | |
1783 | arc->cs_count -= cycle_count; | |
1784 | for (dst = head; (probe_arc = dst->u.cycle.arc); | |
1785 | dst = probe_arc->src) | |
1786 | probe_arc->cs_count -= cycle_count; | |
1787 | ||
10b7602f NS |
1788 | /* Unwind to the cyclic arc. */ |
1789 | while (head != cycle_arc->src) | |
27283c73 | 1790 | { |
10b7602f | 1791 | arc = head->u.cycle.arc; |
3d7ca167 | 1792 | head->u.cycle.arc = NULL; |
10b7602f | 1793 | head = arc->src; |
27283c73 | 1794 | } |
10b7602f NS |
1795 | /* Move on. */ |
1796 | arc = arc->succ_next; | |
1797 | continue; | |
27283c73 | 1798 | } |
f55ade6e | 1799 | |
10b7602f NS |
1800 | /* Add new block to chain. */ |
1801 | dst->u.cycle.arc = arc; | |
1802 | head = dst; | |
1803 | goto next_vertex; | |
27283c73 | 1804 | } |
10b7602f NS |
1805 | /* We could not add another vertex to the path. Remove |
1806 | the last vertex from the list. */ | |
1807 | arc = head->u.cycle.arc; | |
1808 | if (arc) | |
27283c73 | 1809 | { |
71c0e7fc | 1810 | /* It was not the first vertex. Move onto next arc. */ |
10b7602f NS |
1811 | head->u.cycle.arc = NULL; |
1812 | head = arc->src; | |
1813 | arc = arc->succ_next; | |
1814 | goto current_vertex; | |
27283c73 | 1815 | } |
10b7602f NS |
1816 | /* Mark this block as unusable. */ |
1817 | block->u.cycle.ident = ~0U; | |
27283c73 | 1818 | } |
10b7602f | 1819 | |
27283c73 NS |
1820 | line->count = count; |
1821 | } | |
f55ade6e | 1822 | |
4977bab6 | 1823 | if (line->exists) |
8b219a76 | 1824 | { |
4977bab6 ZW |
1825 | src->coverage.lines++; |
1826 | if (line->count) | |
1827 | src->coverage.lines_executed++; | |
8b219a76 | 1828 | } |
8b219a76 NS |
1829 | } |
1830 | } | |
86144b75 | 1831 | |
61ada8ae | 1832 | /* Output information about ARC number IX. Returns nonzero if |
27283c73 NS |
1833 | anything is output. */ |
1834 | ||
1835 | static int | |
f55ade6e | 1836 | output_branch_count (FILE *gcov_file, int ix, const arc_t *arc) |
27283c73 | 1837 | { |
f55ade6e | 1838 | |
27283c73 NS |
1839 | if (arc->is_call_non_return) |
1840 | { | |
1841 | if (arc->src->count) | |
1842 | { | |
1843 | fnotice (gcov_file, "call %2d returned %s\n", ix, | |
1844 | format_gcov (arc->src->count - arc->count, | |
1845 | arc->src->count, -flag_counts)); | |
1846 | } | |
1847 | else | |
1848 | fnotice (gcov_file, "call %2d never executed\n", ix); | |
1849 | } | |
1850 | else if (!arc->is_unconditional) | |
1851 | { | |
1852 | if (arc->src->count) | |
1853 | fnotice (gcov_file, "branch %2d taken %s%s\n", ix, | |
1854 | format_gcov (arc->count, arc->src->count, -flag_counts), | |
1855 | arc->fall_through ? " (fallthrough)" : ""); | |
1856 | else | |
1857 | fnotice (gcov_file, "branch %2d never executed\n", ix); | |
1858 | } | |
10b7602f | 1859 | else if (flag_unconditional && !arc->dst->is_call_return) |
27283c73 NS |
1860 | { |
1861 | if (arc->src->count) | |
1862 | fnotice (gcov_file, "unconditional %2d taken %s\n", ix, | |
1863 | format_gcov (arc->count, arc->src->count, -flag_counts)); | |
1864 | else | |
1865 | fnotice (gcov_file, "unconditional %2d never executed\n", ix); | |
1866 | } | |
1867 | else | |
1868 | return 0; | |
1869 | return 1; | |
f55ade6e | 1870 | |
27283c73 NS |
1871 | } |
1872 | ||
8b219a76 NS |
1873 | /* Read in the source file one line at a time, and output that line to |
1874 | the gcov file preceded by its execution count and other | |
1875 | information. */ | |
86144b75 | 1876 | |
8b219a76 | 1877 | static void |
f55ade6e | 1878 | output_lines (FILE *gcov_file, const source_t *src) |
8b219a76 NS |
1879 | { |
1880 | FILE *source_file; | |
f55ade6e | 1881 | unsigned line_num; /* current line number. */ |
4977bab6 ZW |
1882 | const line_t *line; /* current line info ptr. */ |
1883 | char string[STRING_SIZE]; /* line buffer. */ | |
1884 | char const *retval = ""; /* status of source file reading. */ | |
f5d39c3d | 1885 | function_t *fn = NULL; |
4977bab6 ZW |
1886 | |
1887 | fprintf (gcov_file, "%9s:%5d:Source:%s\n", "-", 0, src->name); | |
1a9075e2 TG |
1888 | if (!multiple_files) |
1889 | { | |
1890 | fprintf (gcov_file, "%9s:%5d:Graph:%s\n", "-", 0, bbg_file_name); | |
1891 | fprintf (gcov_file, "%9s:%5d:Data:%s\n", "-", 0, | |
1892 | no_data_file ? "-" : da_file_name); | |
1893 | fprintf (gcov_file, "%9s:%5d:Runs:%u\n", "-", 0, | |
1894 | object_summary.ctrs[GCOV_COUNTER_ARCS].runs); | |
1895 | } | |
27283c73 | 1896 | fprintf (gcov_file, "%9s:%5d:Programs:%u\n", "-", 0, program_count); |
f55ade6e | 1897 | |
4977bab6 | 1898 | source_file = fopen (src->name, "r"); |
8b219a76 NS |
1899 | if (!source_file) |
1900 | { | |
4977bab6 | 1901 | fnotice (stderr, "%s:cannot open source file\n", src->name); |
8b219a76 NS |
1902 | retval = NULL; |
1903 | } | |
1a9075e2 TG |
1904 | else if (src->file_time == 0) |
1905 | fprintf (gcov_file, "%9s:%5d:Source is newer than graph\n", "-", 0); | |
8b219a76 | 1906 | |
f5d39c3d NS |
1907 | if (flag_branches) |
1908 | fn = src->functions; | |
1909 | ||
4977bab6 ZW |
1910 | for (line_num = 1, line = &src->lines[line_num]; |
1911 | line_num < src->num_lines; line_num++, line++) | |
8b219a76 | 1912 | { |
27283c73 NS |
1913 | for (; fn && fn->line == line_num; fn = fn->line_next) |
1914 | { | |
1915 | arc_t *arc = fn->blocks[fn->num_blocks - 1].pred; | |
1916 | gcov_type return_count = fn->blocks[fn->num_blocks - 1].count; | |
b8698a0f | 1917 | |
27283c73 NS |
1918 | for (; arc; arc = arc->pred_next) |
1919 | if (arc->fake) | |
1920 | return_count -= arc->count; | |
b8698a0f | 1921 | |
27283c73 NS |
1922 | fprintf (gcov_file, "function %s", fn->name); |
1923 | fprintf (gcov_file, " called %s", | |
1924 | format_gcov (fn->blocks[0].count, 0, -1)); | |
1925 | fprintf (gcov_file, " returned %s", | |
1926 | format_gcov (return_count, fn->blocks[0].count, 0)); | |
1927 | fprintf (gcov_file, " blocks executed %s", | |
1928 | format_gcov (fn->blocks_executed, fn->num_blocks - 2, 0)); | |
1929 | fprintf (gcov_file, "\n"); | |
1930 | } | |
f55ade6e | 1931 | |
8b219a76 | 1932 | /* For lines which don't exist in the .bb file, print '-' before |
f55ade6e AJ |
1933 | the source line. For lines which exist but were never |
1934 | executed, print '#####' before the source line. Otherwise, | |
1935 | print the execution count before the source line. There are | |
1936 | 16 spaces of indentation added before the source line so that | |
1937 | tabs won't be messed up. */ | |
4977bab6 ZW |
1938 | fprintf (gcov_file, "%9s:%5u:", |
1939 | !line->exists ? "-" : !line->count ? "#####" | |
1940 | : format_gcov (line->count, 0, -1), line_num); | |
f55ade6e | 1941 | |
8b219a76 NS |
1942 | if (retval) |
1943 | { | |
1944 | /* Copy source line. */ | |
1945 | do | |
1946 | { | |
1947 | retval = fgets (string, STRING_SIZE, source_file); | |
1948 | if (!retval) | |
299f79b5 | 1949 | break; |
8b219a76 | 1950 | fputs (retval, gcov_file); |
37b8715b | 1951 | } |
8b219a76 NS |
1952 | while (!retval[0] || retval[strlen (retval) - 1] != '\n'); |
1953 | } | |
1954 | if (!retval) | |
299f79b5 | 1955 | fputs ("/*EOF*/\n", gcov_file); |
27283c73 NS |
1956 | |
1957 | if (flag_all_blocks) | |
8b219a76 | 1958 | { |
27283c73 | 1959 | block_t *block; |
10b7602f | 1960 | arc_t *arc; |
27283c73 | 1961 | int ix, jx; |
f55ade6e | 1962 | |
27283c73 NS |
1963 | for (ix = jx = 0, block = line->u.blocks; block; |
1964 | block = block->chain) | |
37b8715b | 1965 | { |
10b7602f | 1966 | if (!block->is_call_return) |
27283c73 NS |
1967 | fprintf (gcov_file, "%9s:%5u-block %2d\n", |
1968 | !line->exists ? "-" : !block->count ? "$$$$$" | |
10b7602f NS |
1969 | : format_gcov (block->count, 0, -1), |
1970 | line_num, ix++); | |
27283c73 NS |
1971 | if (flag_branches) |
1972 | for (arc = block->succ; arc; arc = arc->succ_next) | |
1973 | jx += output_branch_count (gcov_file, jx, arc); | |
86144b75 | 1974 | } |
8b219a76 | 1975 | } |
27283c73 NS |
1976 | else if (flag_branches) |
1977 | { | |
1978 | int ix; | |
1979 | arc_t *arc; | |
f55ade6e | 1980 | |
27283c73 NS |
1981 | for (ix = 0, arc = line->u.branches; arc; arc = arc->line_next) |
1982 | ix += output_branch_count (gcov_file, ix, arc); | |
1983 | } | |
8b219a76 | 1984 | } |
f55ade6e | 1985 | |
8b219a76 NS |
1986 | /* Handle all remaining source lines. There may be lines after the |
1987 | last line of code. */ | |
1988 | if (retval) | |
1989 | { | |
1990 | for (; (retval = fgets (string, STRING_SIZE, source_file)); line_num++) | |
1991 | { | |
4977bab6 | 1992 | fprintf (gcov_file, "%9s:%5u:%s", "-", line_num, retval); |
f55ade6e | 1993 | |
8b219a76 | 1994 | while (!retval[0] || retval[strlen (retval) - 1] != '\n') |
37b8715b | 1995 | { |
8b219a76 NS |
1996 | retval = fgets (string, STRING_SIZE, source_file); |
1997 | if (!retval) | |
1998 | break; | |
1999 | fputs (retval, gcov_file); | |
37b8715b | 2000 | } |
8b219a76 NS |
2001 | } |
2002 | } | |
f55ade6e | 2003 | |
8b219a76 NS |
2004 | if (source_file) |
2005 | fclose (source_file); | |
2006 | } |