aboutsummaryrefslogtreecommitdiff
path: root/gprof/gprof.c
blob: 4a1fd50d01d620bf32410ce98478d62de81b85ee (plain)
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
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
/*
 * Copyright (c) 1983, 1998, 2001 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that: (1) source distributions retain this entire copyright
 * notice and comment, and (2) distributions including binaries display
 * the following acknowledgement:  ``This product includes software
 * developed by the University of California, Berkeley and its contributors''
 * in the documentation or other materials provided with the distribution
 * and in all advertising materials mentioning features or use of this
 * software. Neither the name of the University nor the names of its
 * contributors may be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */
#include "getopt.h"
#include "libiberty.h"
#include "gprof.h"
#include "basic_blocks.h"
#include "call_graph.h"
#include "cg_arcs.h"
#include "cg_print.h"
#include "corefile.h"
#include "gmon_io.h"
#include "hertz.h"
#include "hist.h"
#include "source.h"
#include "sym_ids.h"
#include "demangle.h"

const char *whoami;
const char *function_mapping_file;
const char *a_out_name = A_OUTNAME;
long hz = HZ_WRONG;

/*
 * Default options values:
 */
int debug_level = 0;
int output_style = 0;
int output_width = 80;
bool bsd_style_output = FALSE;
bool demangle = TRUE;
bool discard_underscores = TRUE;
bool ignore_direct_calls = FALSE;
bool ignore_static_funcs = FALSE;
bool ignore_zeros = TRUE;
bool line_granularity = FALSE;
bool print_descriptions = TRUE;
bool print_path = FALSE;
bool ignore_non_functions = FALSE;
File_Format file_format = FF_AUTO;

bool first_output = TRUE;

char copyright[] =
 "@(#) Copyright (c) 1983 Regents of the University of California.\n\
 All rights reserved.\n";

static char *gmon_name = GMONNAME;	/* profile filename */

bfd *abfd;

/*
 * Functions that get excluded by default:
 */
static char *default_excluded_list[] =
{
  "_gprof_mcount", "mcount", "_mcount", "__mcount", "__mcount_internal",
  "__mcleanup",
  "<locore>", "<hicore>",
  0
};

/* Codes used for the long options with no short synonyms.  150 isn't
   special; it's just an arbitrary non-ASCII char value.  */

#define OPTION_DEMANGLE		(150)
#define OPTION_NO_DEMANGLE	(OPTION_DEMANGLE + 1)

static struct option long_options[] =
{
  {"line", no_argument, 0, 'l'},
  {"no-static", no_argument, 0, 'a'},
  {"ignore-non-functions", no_argument, 0, 'D'},

    /* output styles: */

  {"annotated-source", optional_argument, 0, 'A'},
  {"no-annotated-source", optional_argument, 0, 'J'},
  {"flat-profile", optional_argument, 0, 'p'},
  {"no-flat-profile", optional_argument, 0, 'P'},
  {"graph", optional_argument, 0, 'q'},
  {"no-graph", optional_argument, 0, 'Q'},
  {"exec-counts", optional_argument, 0, 'C'},
  {"no-exec-counts", optional_argument, 0, 'Z'},
  {"function-ordering", no_argument, 0, 'r'},
  {"file-ordering", required_argument, 0, 'R'},
  {"file-info", no_argument, 0, 'i'},
  {"sum", no_argument, 0, 's'},

    /* various options to affect output: */

  {"all-lines", no_argument, 0, 'x'},
  {"demangle", optional_argument, 0, OPTION_DEMANGLE},
  {"no-demangle", no_argument, 0, OPTION_NO_DEMANGLE},
  {"directory-path", required_argument, 0, 'I'},
  {"display-unused-functions", no_argument, 0, 'z'},
  {"min-count", required_argument, 0, 'm'},
  {"print-path", no_argument, 0, 'L'},
  {"separate-files", no_argument, 0, 'y'},
  {"static-call-graph", no_argument, 0, 'c'},
  {"table-length", required_argument, 0, 't'},
  {"time", required_argument, 0, 'n'},
  {"no-time", required_argument, 0, 'N'},
  {"width", required_argument, 0, 'w'},
    /*
     * These are for backwards-compatibility only.  Their functionality
     * is provided by the output style options already:
     */
  {"", required_argument, 0, 'e'},
  {"", required_argument, 0, 'E'},
  {"", required_argument, 0, 'f'},
  {"", required_argument, 0, 'F'},
  {"", required_argument, 0, 'k'},

    /* miscellaneous: */

  {"brief", no_argument, 0, 'b'},
  {"debug", optional_argument, 0, 'd'},
  {"help", no_argument, 0, 'h'},
  {"file-format", required_argument, 0, 'O'},
  {"traditional", no_argument, 0, 'T'},
  {"version", no_argument, 0, 'v'},
  {0, no_argument, 0, 0}
};


static void
DEFUN (usage, (stream, status), FILE * stream AND int status)
{
  fprintf (stream, _("\
Usage: %s [-[abcDhilLsTvwxyz]] [-[ACeEfFJnNOpPqQZ][name]] [-I dirs]\n\
	[-d[num]] [-k from/to] [-m min-count] [-t table-length]\n\
	[--[no-]annotated-source[=name]] [--[no-]exec-counts[=name]]\n\
	[--[no-]flat-profile[=name]] [--[no-]graph[=name]]\n\
	[--[no-]time=name] [--all-lines] [--brief] [--debug[=level]]\n\
	[--function-ordering] [--file-ordering]\n\
	[--directory-path=dirs] [--display-unused-functions]\n\
	[--file-format=name] [--file-info] [--help] [--line] [--min-count=n]\n\
	[--no-static] [--print-path] [--separate-files]\n\
	[--static-call-graph] [--sum] [--table-length=len] [--traditional]\n\
	[--version] [--width=n] [--ignore-non-functions]\n\
	[--demangle[=STYLE]] [--no-demangle]\n\
	[image-file] [profile-file...]\n"),
	   whoami);
  if (status == 0)
    fprintf (stream, _("Report bugs to %s\n"), REPORT_BUGS_TO);
  done (status);
}


int
DEFUN (main, (argc, argv), int argc AND char **argv)
{
  char **sp, *str;
  Sym **cg = 0;
  int ch, user_specified = 0;

#if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
  setlocale (LC_MESSAGES, "");
#endif
#if defined (HAVE_SETLOCALE)
  setlocale (LC_CTYPE, "");
#endif
  bindtextdomain (PACKAGE, LOCALEDIR);
  textdomain (PACKAGE);

  whoami = argv[0];
  xmalloc_set_program_name (whoami);

  while ((ch = getopt_long (argc, argv,
	"aA::bBcCd::De:E:f:F:hiI:J::k:lLm:n::N::O:p::P::q::Q::st:Tvw:xyzZ::",
			    long_options, 0))
	 != EOF)
    {
      switch (ch)
	{
	case 'a':
	  ignore_static_funcs = TRUE;
	  break;
	case 'A':
	  if (optarg)
	    {
	      sym_id_add (optarg, INCL_ANNO);
	    }
	  output_style |= STYLE_ANNOTATED_SOURCE;
	  user_specified |= STYLE_ANNOTATED_SOURCE;
	  break;
	case 'b':
	  print_descriptions = FALSE;
	  break;
	case 'B':
	  output_style |= STYLE_CALL_GRAPH;
	  user_specified |= STYLE_CALL_GRAPH;
	  break;
	case 'c':
	  ignore_direct_calls = TRUE;
	  break;
	case 'C':
	  if (optarg)
	    {
	      sym_id_add (optarg, INCL_EXEC);
	    }
	  output_style |= STYLE_EXEC_COUNTS;
	  user_specified |= STYLE_EXEC_COUNTS;
	  break;
	case 'd':
	  if (optarg)
	    {
	      debug_level |= atoi (optarg);
	      debug_level |= ANYDEBUG;
	    }
	  else
	    {
	      debug_level = ~0;
	    }
	  DBG (ANYDEBUG, printf ("[main] debug-level=0x%x\n", debug_level));
#ifndef DEBUG
	  printf (_("%s: debugging not supported; -d ignored\n"), whoami);
#endif	/* DEBUG */
	  break;
	case 'D':
	  ignore_non_functions = TRUE;
	  break;
	case 'E':
	  sym_id_add (optarg, EXCL_TIME);
	case 'e':
	  sym_id_add (optarg, EXCL_GRAPH);
	  break;
	case 'F':
	  sym_id_add (optarg, INCL_TIME);
	case 'f':
	  sym_id_add (optarg, INCL_GRAPH);
	  break;
	case 'g':
	  sym_id_add (optarg, EXCL_FLAT);
	  break;
	case 'G':
	  sym_id_add (optarg, INCL_FLAT);
	  break;
	case 'h':
	  usage (stdout, 0);
	case 'i':
	  output_style |= STYLE_GMON_INFO;
	  user_specified |= STYLE_GMON_INFO;
	  break;
	case 'I':
	  search_list_append (&src_search_list, optarg);
	  break;
	case 'J':
	  if (optarg)
	    {
	      sym_id_add (optarg, EXCL_ANNO);
	      output_style |= STYLE_ANNOTATED_SOURCE;
	    }
	  else
	    {
	      output_style &= ~STYLE_ANNOTATED_SOURCE;
	    }
	  user_specified |= STYLE_ANNOTATED_SOURCE;
	  break;
	case 'k':
	  sym_id_add (optarg, EXCL_ARCS);
	  break;
	case 'l':
	  line_granularity = TRUE;
	  break;
	case 'L':
	  print_path = TRUE;
	  break;
	case 'm':
	  bb_min_calls = (unsigned long) strtoul (optarg, (char **) NULL, 10);
	  break;
	case 'n':
	  sym_id_add (optarg, INCL_TIME);
	  break;
	case 'N':
	  sym_id_add (optarg, EXCL_TIME);
	  break;
	case 'O':
	  switch (optarg[0])
	    {
	    case 'a':
	      file_format = FF_AUTO;
	      break;
	    case 'm':
	      file_format = FF_MAGIC;
	      break;
	    case 'b':
	      file_format = FF_BSD;
	      break;
	    case '4':
	      file_format = FF_BSD44;
	      break;
	    case 'p':
	      file_format = FF_PROF;
	      break;
	    default:
	      fprintf (stderr, _("%s: unknown file format %s\n"),
		       optarg, whoami);
	      done (1);
	    }
	  break;
	case 'p':
	  if (optarg)
	    {
	      sym_id_add (optarg, INCL_FLAT);
	    }
	  output_style |= STYLE_FLAT_PROFILE;
	  user_specified |= STYLE_FLAT_PROFILE;
	  break;
	case 'P':
	  if (optarg)
	    {
	      sym_id_add (optarg, EXCL_FLAT);
	      output_style |= STYLE_FLAT_PROFILE;
	    }
	  else
	    {
	      output_style &= ~STYLE_FLAT_PROFILE;
	    }
	  user_specified |= STYLE_FLAT_PROFILE;
	  break;
	case 'q':
	  if (optarg)
	    {
	      if (strchr (optarg, '/'))
		{
		  sym_id_add (optarg, INCL_ARCS);
		}
	      else
		{
		  sym_id_add (optarg, INCL_GRAPH);
		}
	    }
	  output_style |= STYLE_CALL_GRAPH;
	  user_specified |= STYLE_CALL_GRAPH;
	  break;
	case 'r':
	  output_style |= STYLE_FUNCTION_ORDER;
	  user_specified |= STYLE_FUNCTION_ORDER;
	  break;
	case 'R':
	  output_style |= STYLE_FILE_ORDER;
	  user_specified |= STYLE_FILE_ORDER;
	  function_mapping_file = optarg;
	  break;
	case 'Q':
	  if (optarg)
	    {
	      if (strchr (optarg, '/'))
		{
		  sym_id_add (optarg, EXCL_ARCS);
		}
	      else
		{
		  sym_id_add (optarg, EXCL_GRAPH);
		}
	      output_style |= STYLE_CALL_GRAPH;
	    }
	  else
	    {
	      output_style &= ~STYLE_CALL_GRAPH;
	    }
	  user_specified |= STYLE_CALL_GRAPH;
	  break;
	case 's':
	  output_style |= STYLE_SUMMARY_FILE;
	  user_specified |= STYLE_SUMMARY_FILE;
	  break;
	case 't':
	  bb_table_length = atoi (optarg);
	  if (bb_table_length < 0)
	    {
	      bb_table_length = 0;
	    }
	  break;
	case 'T':
	  bsd_style_output = TRUE;
	  break;
	case 'v':
	  /* This output is intended to follow the GNU standards document.  */
	  printf (_("GNU gprof %s\n"), VERSION);
	  printf (_("Based on BSD gprof, copyright 1983 Regents of the University of California.\n"));
	  printf (_("\
This program is free software.  This program has absolutely no warranty.\n"));
	  done (0);
	case 'w':
	  output_width = atoi (optarg);
	  if (output_width < 1)
	    {
	      output_width = 1;
	    }
	  break;
	case 'x':
	  bb_annotate_all_lines = TRUE;
	  break;
	case 'y':
	  create_annotation_files = TRUE;
	  break;
	case 'z':
	  ignore_zeros = FALSE;
	  break;
	case 'Z':
	  if (optarg)
	    {
	      sym_id_add (optarg, EXCL_EXEC);
	      output_style |= STYLE_EXEC_COUNTS;
	    }
	  else
	    {
	      output_style &= ~STYLE_EXEC_COUNTS;
	    }
	  user_specified |= STYLE_ANNOTATED_SOURCE;
	  break;
	case OPTION_DEMANGLE:
	  demangle = TRUE;
	  if (optarg != NULL)
	    {
	      enum demangling_styles style;

	      style = cplus_demangle_name_to_style (optarg);
	      if (style == unknown_demangling)
		{
		  fprintf (stderr,
			   _("%s: unknown demangling style `%s'\n"),
			   whoami, optarg);
		  xexit (1);
		}

	      cplus_demangle_set_style (style);
	   }
	  break;
	case OPTION_NO_DEMANGLE:
	  demangle = FALSE;
	  break;
	default:
	  usage (stderr, 1);
	}
    }

  /* Don't allow both ordering options, they modify the arc data in-place.  */
  if ((user_specified & STYLE_FUNCTION_ORDER)
      && (user_specified & STYLE_FILE_ORDER))
    {
      fprintf (stderr,_("\
%s: Only one of --function-ordering and --file-ordering may be specified.\n"),
	       whoami);
      done (1);
    }

  /* --sum implies --line, otherwise we'd lose b-b counts in gmon.sum */
  if (output_style & STYLE_SUMMARY_FILE)
    {
      line_granularity = 1;
    }

  /* append value of GPROF_PATH to source search list if set: */
  str = (char *) getenv ("GPROF_PATH");
  if (str)
    {
      search_list_append (&src_search_list, str);
    }

  if (optind < argc)
    {
      a_out_name = argv[optind++];
    }
  if (optind < argc)
    {
      gmon_name = argv[optind++];
    }

  /*
   * Turn off default functions:
   */
  for (sp = &default_excluded_list[0]; *sp; sp++)
    {
      sym_id_add (*sp, EXCL_TIME);
      sym_id_add (*sp, EXCL_GRAPH);
#ifdef __alpha__
      sym_id_add (*sp, EXCL_FLAT);
#endif
    }

  /*
   * For line-by-line profiling, also want to keep those
   * functions off the flat profile:
   */
  if (line_granularity)
    {
      for (sp = &default_excluded_list[0]; *sp; sp++)
	{
	  sym_id_add (*sp, EXCL_FLAT);
	}
    }

  /*
   * Read symbol table from core file:
   */
  core_init (a_out_name);

  /*
   * If we should ignore direct function calls, we need to load
   * to core's text-space:
   */
  if (ignore_direct_calls)
    {
      core_get_text_space (core_bfd);
    }

  /*
   * Create symbols from core image:
   */
  if (line_granularity)
    {
      core_create_line_syms (core_bfd);
    }
  else
    {
      core_create_function_syms (core_bfd);
    }

  /*
   * Translate sym specs into syms:
   */
  sym_id_parse ();

  if (file_format == FF_PROF)
    {
#ifdef PROF_SUPPORT_IMPLEMENTED
      /*
       * Get information about mon.out file(s):
       */
      do
	{
	  mon_out_read (gmon_name);
	  if (optind < argc)
	    {
	      gmon_name = argv[optind];
	    }
	}
      while (optind++ < argc);
#else
      fprintf (stderr,
	       _("%s: sorry, file format `prof' is not yet supported\n"),
	       whoami);
      done (1);
#endif
    }
  else
    {
      /*
       * Get information about gmon.out file(s):
       */
      do
	{
	  gmon_out_read (gmon_name);
	  if (optind < argc)
	    {
	      gmon_name = argv[optind];
	    }
	}
      while (optind++ < argc);
    }

  /*
   * If user did not specify output style, try to guess something
   * reasonable:
   */
  if (output_style == 0)
    {
      if (gmon_input & (INPUT_HISTOGRAM | INPUT_CALL_GRAPH))
	{
	  output_style = STYLE_FLAT_PROFILE | STYLE_CALL_GRAPH;
	}
      else
	{
	  output_style = STYLE_EXEC_COUNTS;
	}
      output_style &= ~user_specified;
    }

  /*
   * Dump a gmon.sum file if requested (before any other processing!):
   */
  if (output_style & STYLE_SUMMARY_FILE)
    {
      gmon_out_write (GMONSUM);
    }

  if (gmon_input & INPUT_HISTOGRAM)
    {
      hist_assign_samples ();
    }

  if (gmon_input & INPUT_CALL_GRAPH)
    {
      cg = cg_assemble ();
    }

  /* do some simple sanity checks: */

  if ((output_style & STYLE_FLAT_PROFILE)
      && !(gmon_input & INPUT_HISTOGRAM))
    {
      fprintf (stderr, _("%s: gmon.out file is missing histogram\n"), whoami);
      done (1);
    }

  if ((output_style & STYLE_CALL_GRAPH) && !(gmon_input & INPUT_CALL_GRAPH))
    {
      fprintf (stderr,
	       _("%s: gmon.out file is missing call-graph data\n"), whoami);
      done (1);
    }

  /* output whatever user whishes to see: */

  if (cg && (output_style & STYLE_CALL_GRAPH) && bsd_style_output)
    {
      cg_print (cg);		/* print the dynamic profile */
    }

  if (output_style & STYLE_FLAT_PROFILE)
    {
      hist_print ();		/* print the flat profile */
    }

  if (cg && (output_style & STYLE_CALL_GRAPH))
    {
      if (!bsd_style_output)
	{
	  cg_print (cg);	/* print the dynamic profile */
	}
      cg_print_index ();
    }

  if (output_style & STYLE_EXEC_COUNTS)
    {
      print_exec_counts ();
    }

  if (output_style & STYLE_ANNOTATED_SOURCE)
    {
      print_annotated_source ();
    }
  if (output_style & STYLE_FUNCTION_ORDER)
    {
      cg_print_function_ordering ();
    }
  if (output_style & STYLE_FILE_ORDER)
    {
      cg_print_file_ordering ();
    }
  return 0;
}

void
done (status)
     int status;
{
  exit (status);
}