gprof/gprof.c

   1 /*
   2  * Copyright (c) 1983, 1998 Regents of the University of California.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms are permitted
   6  * provided that: (1) source distributions retain this entire copyright
   7  * notice and comment, and (2) distributions including binaries display
   8  * the following acknowledgement:  ``This product includes software
   9  * developed by the University of California, Berkeley and its contributors''
  10  * in the documentation or other materials provided with the distribution
  11  * and in all advertising materials mentioning features or use of this
  12  * software. Neither the name of the University nor the names of its
  13  * contributors may be used to endorse or promote products derived
  14  * from this software without specific prior written permission.
  15  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
  16  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
  17  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  18  */
  19 #include "getopt.h"
  20 #include "libiberty.h"
  21 #include "gprof.h"
  22 #include "basic_blocks.h"
  23 #include "call_graph.h"
  24 #include "cg_arcs.h"
  25 #include "cg_print.h"
  26 #include "corefile.h"
  27 #include "gmon_io.h"
  28 #include "hertz.h"
  29 #include "hist.h"
  30 #include "source.h"
  31 #include "sym_ids.h"
  32
  33 const char *whoami;
  34 const char *function_mapping_file;
  35 const char *a_out_name = A_OUTNAME;
  36 long hz = HZ_WRONG;
  37
  38 /*
  39  * Default options values:
  40  */
  41 int debug_level = 0;
  42 int output_style = 0;
  43 int output_width = 80;
  44 bool bsd_style_output = FALSE;
  45 bool demangle = TRUE;
  46 bool discard_underscores = TRUE;
  47 bool ignore_direct_calls = FALSE;
  48 bool ignore_static_funcs = FALSE;
  49 bool ignore_zeros = TRUE;
  50 bool line_granularity = FALSE;
  51 bool print_descriptions = TRUE;
  52 bool print_path = FALSE;
  53 bool ignore_non_functions = FALSE;
  54 File_Format file_format = FF_AUTO;
  55
  56 bool first_output = TRUE;
  57
  58 char copyright[] =
  59  N_("@(#) Copyright (c) 1983 Regents of the University of California.\n\
  60  All rights reserved.\n");
  61
  62 static char *gmon_name = GMONNAME;      /* profile filename */
  63
  64 bfd *abfd;
  65
  66 /*
  67  * Functions that get excluded by default:
  68  */
  69 static char *default_excluded_list[] =
  70 {
  71   "_gprof_mcount", "mcount", "_mcount", "__mcount", "__mcount_internal",
  72   "__mcleanup",
  73   "<locore>", "<hicore>",
  74   0
  75 };
  76
  77 /* Codes used for the long options with no short synonyms.  150 isn't
  78    special; it's just an arbitrary non-ASCII char value.  */
  79
  80 #define OPTION_DEMANGLE         (150)
  81 #define OPTION_NO_DEMANGLE      (OPTION_DEMANGLE + 1)
  82
  83 static struct option long_options[] =
  84 {
  85   {"line", no_argument, 0, 'l'},
  86   {"no-static", no_argument, 0, 'a'},
  87   {"ignore-non-functions", no_argument, 0, 'D'},
  88
  89     /* output styles: */
  90
  91   {"annotated-source", optional_argument, 0, 'A'},
  92   {"no-annotated-source", optional_argument, 0, 'J'},
  93   {"flat-profile", optional_argument, 0, 'p'},
  94   {"no-flat-profile", optional_argument, 0, 'P'},
  95   {"graph", optional_argument, 0, 'q'},
  96   {"no-graph", optional_argument, 0, 'Q'},
  97   {"exec-counts", optional_argument, 0, 'C'},
  98   {"no-exec-counts", optional_argument, 0, 'Z'},
  99   {"function-ordering", no_argument, 0, 'r'},
 100   {"file-ordering", required_argument, 0, 'R'},
 101   {"file-info", no_argument, 0, 'i'},
 102   {"sum", no_argument, 0, 's'},
 103
 104     /* various options to affect output: */
 105
 106   {"all-lines", no_argument, 0, 'x'},
 107   {"demangle", no_argument, 0, OPTION_DEMANGLE},
 108   {"no-demangle", no_argument, 0, OPTION_NO_DEMANGLE},
 109   {"directory-path", required_argument, 0, 'I'},
 110   {"display-unused-functions", no_argument, 0, 'z'},
 111   {"min-count", required_argument, 0, 'm'},
 112   {"print-path", no_argument, 0, 'L'},
 113   {"separate-files", no_argument, 0, 'y'},
 114   {"static-call-graph", no_argument, 0, 'c'},
 115   {"table-length", required_argument, 0, 't'},
 116   {"time", required_argument, 0, 'n'},
 117   {"no-time", required_argument, 0, 'N'},
 118   {"width", required_argument, 0, 'w'},
 119     /*
 120      * These are for backwards-compatibility only.  Their functionality
 121      * is provided by the output style options already:
 122      */
 123   {"", required_argument, 0, 'e'},
 124   {"", required_argument, 0, 'E'},
 125   {"", required_argument, 0, 'f'},
 126   {"", required_argument, 0, 'F'},
 127   {"", required_argument, 0, 'k'},
 128
 129     /* miscellaneous: */
 130
 131   {"brief", no_argument, 0, 'b'},
 132   {"debug", optional_argument, 0, 'd'},
 133   {"help", no_argument, 0, 'h'},
 134   {"file-format", required_argument, 0, 'O'},
 135   {"traditional", no_argument, 0, 'T'},
 136   {"version", no_argument, 0, 'v'},
 137   {0, no_argument, 0, 0}
 138 };
 139
 140
 141 static void
 142 DEFUN (usage, (stream, status), FILE * stream AND int status)
 143 {
 144   fprintf (stream, _("\
 145 Usage: %s [-[abcDhilLsTvwxyz]] [-[ACeEfFJnNOpPqQZ][name]] [-I dirs]\n\
 146         [-d[num]] [-k from/to] [-m min-count] [-t table-length]\n\
 147         [--[no-]annotated-source[=name]] [--[no-]exec-counts[=name]]\n\
 148         [--[no-]flat-profile[=name]] [--[no-]graph[=name]]\n\
 149         [--[no-]time=name] [--all-lines] [--brief] [--debug[=level]]\n\
 150         [--function-ordering] [--file-ordering]\n\
 151         [--directory-path=dirs] [--display-unused-functions]\n\
 152         [--file-format=name] [--file-info] [--help] [--line] [--min-count=n]\n\
 153         [--no-static] [--print-path] [--separate-files]\n\
 154         [--static-call-graph] [--sum] [--table-length=len] [--traditional]\n\
 155         [--version] [--width=n] [--ignore-non-functions]\n\
 156         [--demangle] [--no-demangle]\n\
 157         [image-file] [profile-file...]\n"),
 158            whoami);
 159   if (status == 0)
 160     fprintf (stream, _("Report bugs to bug-gnu-utils@gnu.org\n"));
 161   done (status);
 162 }
 163
 164
 165 int
 166 DEFUN (main, (argc, argv), int argc AND char **argv)
 167 {
 168   char **sp, *str;
 169   Sym **cg = 0;
 170   int ch, user_specified = 0;
 171
 172 #ifdef HAVE_SETLOCALE
 173   setlocale (LC_MESSAGES, "");
 174 #endif
 175   bindtextdomain (PACKAGE, LOCALEDIR);
 176   textdomain (PACKAGE);
 177
 178   whoami = argv[0];
 179   xmalloc_set_program_name (whoami);
 180
 181   while ((ch = getopt_long (argc, argv,
 182         "aA::bBcCdD::e:E:f:F:hiI:J::k:lLm:n::N::O:p::P::q::Q::st:Tvw:xyzZ::",
 183                             long_options, 0))
 184          != EOF)
 185     {
 186       switch (ch)
 187         {
 188         case 'a':
 189           ignore_static_funcs = TRUE;
 190           break;
 191         case 'A':
 192           if (optarg)
 193             {
 194               sym_id_add (optarg, INCL_ANNO);
 195             }
 196           output_style |= STYLE_ANNOTATED_SOURCE;
 197           user_specified |= STYLE_ANNOTATED_SOURCE;
 198           break;
 199         case 'b':
 200           print_descriptions = FALSE;
 201           break;
 202         case 'B':
 203           output_style |= STYLE_CALL_GRAPH;
 204           user_specified |= STYLE_CALL_GRAPH;
 205           break;
 206         case 'c':
 207           ignore_direct_calls = TRUE;
 208           break;
 209         case 'C':
 210           if (optarg)
 211             {
 212               sym_id_add (optarg, INCL_EXEC);
 213             }
 214           output_style |= STYLE_EXEC_COUNTS;
 215           user_specified |= STYLE_EXEC_COUNTS;
 216           break;
 217         case 'd':
 218           if (optarg)
 219             {
 220               debug_level |= atoi (optarg);
 221               debug_level |= ANYDEBUG;
 222             }
 223           else
 224             {
 225               debug_level = ~0;
 226             }
 227           DBG (ANYDEBUG, printf ("[main] debug-level=0x%x\n", debug_level));
 228 #ifndef DEBUG
 229           printf (_("%s: debugging not supported; -d ignored\n"), whoami);
 230 #endif  /* DEBUG */
 231           break;
 232         case 'D':
 233           ignore_non_functions = TRUE;
 234           break;
 235         case 'E':
 236           sym_id_add (optarg, EXCL_TIME);
 237         case 'e':
 238           sym_id_add (optarg, EXCL_GRAPH);
 239           break;
 240         case 'F':
 241           sym_id_add (optarg, INCL_TIME);
 242         case 'f':
 243           sym_id_add (optarg, INCL_GRAPH);
 244           break;
 245         case 'g':
 246           sym_id_add (optarg, EXCL_FLAT);
 247           break;
 248         case 'G':
 249           sym_id_add (optarg, INCL_FLAT);
 250           break;
 251         case 'h':
 252           usage (stdout, 0);
 253         case 'i':
 254           output_style |= STYLE_GMON_INFO;
 255           user_specified |= STYLE_GMON_INFO;
 256           break;
 257         case 'I':
 258           search_list_append (&src_search_list, optarg);
 259           break;
 260         case 'J':
 261           if (optarg)
 262             {
 263               sym_id_add (optarg, EXCL_ANNO);
 264               output_style |= STYLE_ANNOTATED_SOURCE;
 265             }
 266           else
 267             {
 268               output_style &= ~STYLE_ANNOTATED_SOURCE;
 269             }
 270           user_specified |= STYLE_ANNOTATED_SOURCE;
 271           break;
 272         case 'k':
 273           sym_id_add (optarg, EXCL_ARCS);
 274           break;
 275         case 'l':
 276           line_granularity = TRUE;
 277           break;
 278         case 'L':
 279           print_path = TRUE;
 280           break;
 281         case 'm':
 282           bb_min_calls = (unsigned long) strtoul (optarg, (char **) NULL, 10);
 283           break;
 284         case 'n':
 285           sym_id_add (optarg, INCL_TIME);
 286           break;
 287         case 'N':
 288           sym_id_add (optarg, EXCL_TIME);
 289           break;
 290         case 'O':
 291           switch (optarg[0])
 292             {
 293             case 'a':
 294               file_format = FF_AUTO;
 295               break;
 296             case 'm':
 297               file_format = FF_MAGIC;
 298               break;
 299             case 'b':
 300               file_format = FF_BSD;
 301               break;
 302             case 'p':
 303               file_format = FF_PROF;
 304               break;
 305             default:
 306               fprintf (stderr, _("%s: unknown file format %s\n"),
 307                        optarg, whoami);
 308               done (1);
 309             }
 310           break;
 311         case 'p':
 312           if (optarg)
 313             {
 314               sym_id_add (optarg, INCL_FLAT);
 315             }
 316           output_style |= STYLE_FLAT_PROFILE;
 317           user_specified |= STYLE_FLAT_PROFILE;
 318           break;
 319         case 'P':
 320           if (optarg)
 321             {
 322               sym_id_add (optarg, EXCL_FLAT);
 323               output_style |= STYLE_FLAT_PROFILE;
 324             }
 325           else
 326             {
 327               output_style &= ~STYLE_FLAT_PROFILE;
 328             }
 329           user_specified |= STYLE_FLAT_PROFILE;
 330           break;
 331         case 'q':
 332           if (optarg)
 333             {
 334               if (strchr (optarg, '/'))
 335                 {
 336                   sym_id_add (optarg, INCL_ARCS);
 337                 }
 338               else
 339                 {
 340                   sym_id_add (optarg, INCL_GRAPH);
 341                 }
 342             }
 343           output_style |= STYLE_CALL_GRAPH;
 344           user_specified |= STYLE_CALL_GRAPH;
 345           break;
 346         case 'r':
 347           output_style |= STYLE_FUNCTION_ORDER;
 348           user_specified |= STYLE_FUNCTION_ORDER;
 349           break;
 350         case 'R':
 351           output_style |= STYLE_FILE_ORDER;
 352           user_specified |= STYLE_FILE_ORDER;
 353           function_mapping_file = optarg;
 354           break;
 355         case 'Q':
 356           if (optarg)
 357             {
 358               if (strchr (optarg, '/'))
 359                 {
 360                   sym_id_add (optarg, EXCL_ARCS);
 361                 }
 362               else
 363                 {
 364                   sym_id_add (optarg, EXCL_GRAPH);
 365                 }
 366               output_style |= STYLE_CALL_GRAPH;
 367             }
 368           else
 369             {
 370               output_style &= ~STYLE_CALL_GRAPH;
 371             }
 372           user_specified |= STYLE_CALL_GRAPH;
 373           break;
 374         case 's':
 375           output_style |= STYLE_SUMMARY_FILE;
 376           user_specified |= STYLE_SUMMARY_FILE;
 377           break;
 378         case 't':
 379           bb_table_length = atoi (optarg);
 380           if (bb_table_length < 0)
 381             {
 382               bb_table_length = 0;
 383             }
 384           break;
 385         case 'T':
 386           bsd_style_output = TRUE;
 387           break;
 388         case 'v':
 389           /* This output is intended to follow the GNU standards document.  */
 390           printf (_("GNU gprof %s\n"), VERSION);
 391           printf (_("Based on BSD gprof, copyright 1983 Regents of the University of California.\n"));
 392           printf (_("\
 393 This program is free software.  This program has absolutely no warranty.\n"));
 394           done (0);
 395         case 'w':
 396           output_width = atoi (optarg);
 397           if (output_width < 1)
 398             {
 399               output_width = 1;
 400             }
 401           break;
 402         case 'x':
 403           bb_annotate_all_lines = TRUE;
 404           break;
 405         case 'y':
 406           create_annotation_files = TRUE;
 407           break;
 408         case 'z':
 409           ignore_zeros = FALSE;
 410           break;
 411         case 'Z':
 412           if (optarg)
 413             {
 414               sym_id_add (optarg, EXCL_EXEC);
 415               output_style |= STYLE_EXEC_COUNTS;
 416             }
 417           else
 418             {
 419               output_style &= ~STYLE_EXEC_COUNTS;
 420             }
 421           user_specified |= STYLE_ANNOTATED_SOURCE;
 422           break;
 423         case OPTION_DEMANGLE:
 424           demangle = TRUE;
 425           break;
 426         case OPTION_NO_DEMANGLE:
 427           demangle = FALSE;
 428           break;
 429         default:
 430           usage (stderr, 1);
 431         }
 432     }
 433
 434   /* Don't allow both ordering options, they modify the arc data in-place.  */
 435   if ((user_specified & STYLE_FUNCTION_ORDER)
 436       && (user_specified & STYLE_FILE_ORDER))
 437     {
 438       fprintf (stderr,_("\
 439 %s: Only one of --function-ordering and --file-ordering may be specified.\n"),
 440                whoami);
 441       done (1);
 442     }
 443
 444   /* --sum implies --line, otherwise we'd lose b-b counts in gmon.sum */
 445   if (output_style & STYLE_SUMMARY_FILE)
 446     {
 447       line_granularity = 1;
 448     }
 449
 450   /* append value of GPROF_PATH to source search list if set: */
 451   str = (char *) getenv ("GPROF_PATH");
 452   if (str)
 453     {
 454       search_list_append (&src_search_list, str);
 455     }
 456
 457   if (optind < argc)
 458     {
 459       a_out_name = argv[optind++];
 460     }
 461   if (optind < argc)
 462     {
 463       gmon_name = argv[optind++];
 464     }
 465
 466   /*
 467    * Turn off default functions:
 468    */
 469   for (sp = &default_excluded_list[0]; *sp; sp++)
 470     {
 471       sym_id_add (*sp, EXCL_TIME);
 472       sym_id_add (*sp, EXCL_GRAPH);
 473 #ifdef __alpha__
 474       sym_id_add (*sp, EXCL_FLAT);
 475 #endif
 476     }
 477
 478   /*
 479    * For line-by-line profiling, also want to keep those
 480    * functions off the flat profile:
 481    */
 482   if (line_granularity)
 483     {
 484       for (sp = &default_excluded_list[0]; *sp; sp++)
 485         {
 486           sym_id_add (*sp, EXCL_FLAT);
 487         }
 488     }
 489
 490   /*
 491    * Read symbol table from core file:
 492    */
 493   core_init (a_out_name);
 494
 495   /*
 496    * If we should ignore direct function calls, we need to load
 497    * to core's text-space:
 498    */
 499   if (ignore_direct_calls)
 500     {
 501       core_get_text_space (core_bfd);
 502     }
 503
 504   /*
 505    * Create symbols from core image:
 506    */
 507   if (line_granularity)
 508     {
 509       core_create_line_syms (core_bfd);
 510     }
 511   else
 512     {
 513       core_create_function_syms (core_bfd);
 514     }
 515
 516   /*
 517    * Translate sym specs into syms:
 518    */
 519   sym_id_parse ();
 520
 521   if (file_format == FF_PROF)
 522     {
 523 #ifdef PROF_SUPPORT_IMPLEMENTED
 524       /*
 525        * Get information about mon.out file(s):
 526        */
 527       do
 528         {
 529           mon_out_read (gmon_name);
 530           if (optind < argc)
 531             {
 532               gmon_name = argv[optind];
 533             }
 534         }
 535       while (optind++ < argc);
 536 #else
 537       fprintf (stderr,
 538                _("%s: sorry, file format `prof' is not yet supported\n"),
 539                whoami);
 540       done (1);
 541 #endif
 542     }
 543   else
 544     {
 545       /*
 546        * Get information about gmon.out file(s):
 547        */
 548       do
 549         {
 550           gmon_out_read (gmon_name);
 551           if (optind < argc)
 552             {
 553               gmon_name = argv[optind];
 554             }
 555         }
 556       while (optind++ < argc);
 557     }
 558
 559   /*
 560    * If user did not specify output style, try to guess something
 561    * reasonable:
 562    */
 563   if (output_style == 0)
 564     {
 565       if (gmon_input & (INPUT_HISTOGRAM | INPUT_CALL_GRAPH))
 566         {
 567           output_style = STYLE_FLAT_PROFILE | STYLE_CALL_GRAPH;
 568         }
 569       else
 570         {
 571           output_style = STYLE_EXEC_COUNTS;
 572         }
 573       output_style &= ~user_specified;
 574     }
 575
 576   /*
 577    * Dump a gmon.sum file if requested (before any other processing!):
 578    */
 579   if (output_style & STYLE_SUMMARY_FILE)
 580     {
 581       gmon_out_write (GMONSUM);
 582     }
 583
 584   if (gmon_input & INPUT_HISTOGRAM)
 585     {
 586       hist_assign_samples ();
 587     }
 588
 589   if (gmon_input & INPUT_CALL_GRAPH)
 590     {
 591       cg = cg_assemble ();
 592     }
 593
 594   /* do some simple sanity checks: */
 595
 596   if ((output_style & STYLE_FLAT_PROFILE)
 597       && !(gmon_input & INPUT_HISTOGRAM))
 598     {
 599       fprintf (stderr, _("%s: gmon.out file is missing histogram\n"), whoami);
 600       done (1);
 601     }
 602
 603   if ((output_style & STYLE_CALL_GRAPH) && !(gmon_input & INPUT_CALL_GRAPH))
 604     {
 605       fprintf (stderr,
 606                _("%s: gmon.out file is missing call-graph data\n"), whoami);
 607       done (1);
 608     }
 609
 610   /* output whatever user whishes to see: */
 611
 612   if (cg && (output_style & STYLE_CALL_GRAPH) && bsd_style_output)
 613     {
 614       cg_print (cg);            /* print the dynamic profile */
 615     }
 616
 617   if (output_style & STYLE_FLAT_PROFILE)
 618     {
 619       hist_print ();            /* print the flat profile */
 620     }
 621
 622   if (cg && (output_style & STYLE_CALL_GRAPH))
 623     {
 624       if (!bsd_style_output)
 625         {
 626           cg_print (cg);        /* print the dynamic profile */
 627         }
 628       cg_print_index ();
 629     }
 630
 631   if (output_style & STYLE_EXEC_COUNTS)
 632     {
 633       print_exec_counts ();
 634     }
 635
 636   if (output_style & STYLE_ANNOTATED_SOURCE)
 637     {
 638       print_annotated_source ();
 639     }
 640   if (output_style & STYLE_FUNCTION_ORDER)
 641     {
 642       cg_print_function_ordering ();
 643     }
 644   if (output_style & STYLE_FILE_ORDER)
 645     {
 646       cg_print_file_ordering ();
 647     }
 648   return 0;
 649 }
 650
 651 void
 652 done (status)
 653      int status;
 654 {
 655   exit (status);
 656 }