gprof/gprof.c

   1 /*
   2  * Copyright (c) 1983 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 "core.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 "@(#) 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   whoami = argv[0];
 173   xmalloc_set_program_name (whoami);
 174
 175   while ((ch = getopt_long (argc, argv,
 176         "aA::bBcCdD::e:E:f:F:hiI:J::k:lLm:n::N::O:p::P::q::Q::st:Tvw:xyzZ::",
 177                             long_options, 0))
 178          != EOF)
 179     {
 180       switch (ch)
 181         {
 182         case 'a':
 183           ignore_static_funcs = TRUE;
 184           break;
 185         case 'A':
 186           if (optarg)
 187             {
 188               sym_id_add (optarg, INCL_ANNO);
 189             }
 190           output_style |= STYLE_ANNOTATED_SOURCE;
 191           user_specified |= STYLE_ANNOTATED_SOURCE;
 192           break;
 193         case 'b':
 194           print_descriptions = FALSE;
 195           break;
 196         case 'B':
 197           output_style |= STYLE_CALL_GRAPH;
 198           user_specified |= STYLE_CALL_GRAPH;
 199           break;
 200         case 'c':
 201           ignore_direct_calls = TRUE;
 202           break;
 203         case 'C':
 204           if (optarg)
 205             {
 206               sym_id_add (optarg, INCL_EXEC);
 207             }
 208           output_style |= STYLE_EXEC_COUNTS;
 209           user_specified |= STYLE_EXEC_COUNTS;
 210           break;
 211         case 'd':
 212           if (optarg)
 213             {
 214               debug_level |= atoi (optarg);
 215               debug_level |= ANYDEBUG;
 216             }
 217           else
 218             {
 219               debug_level = ~0;
 220             }
 221           DBG (ANYDEBUG, printf ("[main] debug-level=0x%x\n", debug_level));
 222 #ifndef DEBUG
 223           printf ("%s: debugging not supported; -d ignored\n", whoami);
 224 #endif  /* DEBUG */
 225           break;
 226         case 'D':
 227           ignore_non_functions = TRUE;
 228           break;
 229         case 'E':
 230           sym_id_add (optarg, EXCL_TIME);
 231         case 'e':
 232           sym_id_add (optarg, EXCL_GRAPH);
 233           break;
 234         case 'F':
 235           sym_id_add (optarg, INCL_TIME);
 236         case 'f':
 237           sym_id_add (optarg, INCL_GRAPH);
 238           break;
 239         case 'g':
 240           sym_id_add (optarg, EXCL_FLAT);
 241           break;
 242         case 'G':
 243           sym_id_add (optarg, INCL_FLAT);
 244           break;
 245         case 'h':
 246           usage (stdout, 0);
 247         case 'i':
 248           output_style |= STYLE_GMON_INFO;
 249           user_specified |= STYLE_GMON_INFO;
 250           break;
 251         case 'I':
 252           search_list_append (&src_search_list, optarg);
 253           break;
 254         case 'J':
 255           if (optarg)
 256             {
 257               sym_id_add (optarg, EXCL_ANNO);
 258               output_style |= STYLE_ANNOTATED_SOURCE;
 259             }
 260           else
 261             {
 262               output_style &= ~STYLE_ANNOTATED_SOURCE;
 263             }
 264           user_specified |= STYLE_ANNOTATED_SOURCE;
 265           break;
 266         case 'k':
 267           sym_id_add (optarg, EXCL_ARCS);
 268           break;
 269         case 'l':
 270           line_granularity = TRUE;
 271           break;
 272         case 'L':
 273           print_path = TRUE;
 274           break;
 275         case 'm':
 276           bb_min_calls = atoi (optarg);
 277           break;
 278         case 'n':
 279           sym_id_add (optarg, INCL_TIME);
 280           break;
 281         case 'N':
 282           sym_id_add (optarg, EXCL_TIME);
 283           break;
 284         case 'O':
 285           switch (optarg[0])
 286             {
 287             case 'a':
 288               file_format = FF_AUTO;
 289               break;
 290             case 'm':
 291               file_format = FF_MAGIC;
 292               break;
 293             case 'b':
 294               file_format = FF_BSD;
 295               break;
 296             case 'p':
 297               file_format = FF_PROF;
 298               break;
 299             default:
 300               fprintf (stderr, "%s: unknown file format %s\n",
 301                        optarg, whoami);
 302               done (1);
 303             }
 304           break;
 305         case 'p':
 306           if (optarg)
 307             {
 308               sym_id_add (optarg, INCL_FLAT);
 309             }
 310           output_style |= STYLE_FLAT_PROFILE;
 311           user_specified |= STYLE_FLAT_PROFILE;
 312           break;
 313         case 'P':
 314           if (optarg)
 315             {
 316               sym_id_add (optarg, EXCL_FLAT);
 317               output_style |= STYLE_FLAT_PROFILE;
 318             }
 319           else
 320             {
 321               output_style &= ~STYLE_FLAT_PROFILE;
 322             }
 323           user_specified |= STYLE_FLAT_PROFILE;
 324           break;
 325         case 'q':
 326           if (optarg)
 327             {
 328               if (strchr (optarg, '/'))
 329                 {
 330                   sym_id_add (optarg, INCL_ARCS);
 331                 }
 332               else
 333                 {
 334                   sym_id_add (optarg, INCL_GRAPH);
 335                 }
 336             }
 337           output_style |= STYLE_CALL_GRAPH;
 338           user_specified |= STYLE_CALL_GRAPH;
 339           break;
 340         case 'r':
 341           output_style |= STYLE_FUNCTION_ORDER;
 342           user_specified |= STYLE_FUNCTION_ORDER;
 343           break;
 344         case 'R':
 345           output_style |= STYLE_FILE_ORDER;
 346           user_specified |= STYLE_FILE_ORDER;
 347           function_mapping_file = optarg;
 348           break;
 349         case 'Q':
 350           if (optarg)
 351             {
 352               if (strchr (optarg, '/'))
 353                 {
 354                   sym_id_add (optarg, EXCL_ARCS);
 355                 }
 356               else
 357                 {
 358                   sym_id_add (optarg, EXCL_GRAPH);
 359                 }
 360               output_style |= STYLE_CALL_GRAPH;
 361             }
 362           else
 363             {
 364               output_style &= ~STYLE_CALL_GRAPH;
 365             }
 366           user_specified |= STYLE_CALL_GRAPH;
 367           break;
 368         case 's':
 369           output_style |= STYLE_SUMMARY_FILE;
 370           user_specified |= STYLE_SUMMARY_FILE;
 371           break;
 372         case 't':
 373           bb_table_length = atoi (optarg);
 374           if (bb_table_length < 0)
 375             {
 376               bb_table_length = 0;
 377             }
 378           break;
 379         case 'T':
 380           bsd_style_output = TRUE;
 381           break;
 382         case 'v':
 383           /* This output is intended to follow the GNU standards document.  */
 384           printf ("GNU gprof %s\n", VERSION);
 385           printf ("Based on BSD gprof, copyright 1983 Regents of the University of California.\n");
 386           printf ("\
 387 This program is free software.  This program has absolutely no warranty.\n");
 388           done (0);
 389         case 'w':
 390           output_width = atoi (optarg);
 391           if (output_width < 1)
 392             {
 393               output_width = 1;
 394             }
 395           break;
 396         case 'x':
 397           bb_annotate_all_lines = TRUE;
 398           break;
 399         case 'y':
 400           create_annotation_files = TRUE;
 401           break;
 402         case 'z':
 403           ignore_zeros = FALSE;
 404           break;
 405         case 'Z':
 406           if (optarg)
 407             {
 408               sym_id_add (optarg, EXCL_EXEC);
 409               output_style |= STYLE_EXEC_COUNTS;
 410             }
 411           else
 412             {
 413               output_style &= ~STYLE_EXEC_COUNTS;
 414             }
 415           user_specified |= STYLE_ANNOTATED_SOURCE;
 416           break;
 417         case OPTION_DEMANGLE:
 418           demangle = TRUE;
 419           break;
 420         case OPTION_NO_DEMANGLE:
 421           demangle = FALSE;
 422           break;
 423         default:
 424           usage (stderr, 1);
 425         }
 426     }
 427
 428   /* Don't allow both ordering options, they modify the arc data in-place.  */
 429   if ((user_specified & STYLE_FUNCTION_ORDER)
 430       && (user_specified & STYLE_FILE_ORDER))
 431     {
 432       fprintf (stderr,"\
 433 %s: Only one of --function-ordering and --file-ordering may be specified.\n",
 434                whoami);
 435       done (1);
 436     }
 437
 438   /* --sum implies --line, otherwise we'd lose b-b counts in gmon.sum */
 439   if (output_style & STYLE_SUMMARY_FILE)
 440     {
 441       line_granularity = 1;
 442     }
 443
 444   /* append value of GPROF_PATH to source search list if set: */
 445   str = (char *) getenv ("GPROF_PATH");
 446   if (str)
 447     {
 448       search_list_append (&src_search_list, str);
 449     }
 450
 451   if (optind < argc)
 452     {
 453       a_out_name = argv[optind++];
 454     }
 455   if (optind < argc)
 456     {
 457       gmon_name = argv[optind++];
 458     }
 459
 460   /*
 461    * Turn off default functions:
 462    */
 463   for (sp = &default_excluded_list[0]; *sp; sp++)
 464     {
 465       sym_id_add (*sp, EXCL_TIME);
 466       sym_id_add (*sp, EXCL_GRAPH);
 467 #ifdef __alpha__
 468       sym_id_add (*sp, EXCL_FLAT);
 469 #endif
 470     }
 471
 472   /*
 473    * For line-by-line profiling, also want to keep those
 474    * functions off the flat profile:
 475    */
 476   if (line_granularity)
 477     {
 478       for (sp = &default_excluded_list[0]; *sp; sp++)
 479         {
 480           sym_id_add (*sp, EXCL_FLAT);
 481         }
 482     }
 483
 484   /*
 485    * Read symbol table from core file:
 486    */
 487   core_init (a_out_name);
 488
 489   /*
 490    * If we should ignore direct function calls, we need to load
 491    * to core's text-space:
 492    */
 493   if (ignore_direct_calls)
 494     {
 495       core_get_text_space (core_bfd);
 496     }
 497
 498   /*
 499    * Create symbols from core image:
 500    */
 501   if (line_granularity)
 502     {
 503       core_create_line_syms (core_bfd);
 504     }
 505   else
 506     {
 507       core_create_function_syms (core_bfd);
 508     }
 509
 510   /*
 511    * Translate sym specs into syms:
 512    */
 513   sym_id_parse ();
 514
 515   if (file_format == FF_PROF)
 516     {
 517 #ifdef PROF_SUPPORT_IMPLEMENTED
 518       /*
 519        * Get information about mon.out file(s):
 520        */
 521       do
 522         {
 523           mon_out_read (gmon_name);
 524           if (optind < argc)
 525             {
 526               gmon_name = argv[optind];
 527             }
 528         }
 529       while (optind++ < argc);
 530 #else
 531       fprintf (stderr,
 532                "%s: sorry, file format `prof' is not yet supported\n",
 533                whoami);
 534       done (1);
 535 #endif
 536     }
 537   else
 538     {
 539       /*
 540        * Get information about gmon.out file(s):
 541        */
 542       do
 543         {
 544           gmon_out_read (gmon_name);
 545           if (optind < argc)
 546             {
 547               gmon_name = argv[optind];
 548             }
 549         }
 550       while (optind++ < argc);
 551     }
 552
 553   /*
 554    * If user did not specify output style, try to guess something
 555    * reasonable:
 556    */
 557   if (output_style == 0)
 558     {
 559       if (gmon_input & (INPUT_HISTOGRAM | INPUT_CALL_GRAPH))
 560         {
 561           output_style = STYLE_FLAT_PROFILE | STYLE_CALL_GRAPH;
 562         }
 563       else
 564         {
 565           output_style = STYLE_EXEC_COUNTS;
 566         }
 567       output_style &= ~user_specified;
 568     }
 569
 570   /*
 571    * Dump a gmon.sum file if requested (before any other processing!):
 572    */
 573   if (output_style & STYLE_SUMMARY_FILE)
 574     {
 575       gmon_out_write (GMONSUM);
 576     }
 577
 578   if (gmon_input & INPUT_HISTOGRAM)
 579     {
 580       hist_assign_samples ();
 581     }
 582
 583   if (gmon_input & INPUT_CALL_GRAPH)
 584     {
 585       cg = cg_assemble ();
 586     }
 587
 588   /* do some simple sanity checks: */
 589
 590   if ((output_style & STYLE_FLAT_PROFILE)
 591       && !(gmon_input & INPUT_HISTOGRAM))
 592     {
 593       fprintf (stderr, "%s: gmon.out file is missing histogram\n", whoami);
 594       done (1);
 595     }
 596
 597   if ((output_style & STYLE_CALL_GRAPH) && !(gmon_input & INPUT_CALL_GRAPH))
 598     {
 599       fprintf (stderr,
 600                "%s: gmon.out file is missing call-graph data\n", whoami);
 601       done (1);
 602     }
 603
 604   /* output whatever user whishes to see: */
 605
 606   if (cg && (output_style & STYLE_CALL_GRAPH) && bsd_style_output)
 607     {
 608       cg_print (cg);            /* print the dynamic profile */
 609     }
 610
 611   if (output_style & STYLE_FLAT_PROFILE)
 612     {
 613       hist_print ();            /* print the flat profile */
 614     }
 615
 616   if (cg && (output_style & STYLE_CALL_GRAPH))
 617     {
 618       if (!bsd_style_output)
 619         {
 620           cg_print (cg);        /* print the dynamic profile */
 621         }
 622       cg_print_index ();
 623     }
 624
 625   if (output_style & STYLE_EXEC_COUNTS)
 626     {
 627       print_exec_counts ();
 628     }
 629
 630   if (output_style & STYLE_ANNOTATED_SOURCE)
 631     {
 632       print_annotated_source ();
 633     }
 634   if (output_style & STYLE_FUNCTION_ORDER)
 635     {
 636       cg_print_function_ordering ();
 637     }
 638   if (output_style & STYLE_FILE_ORDER)
 639     {
 640       cg_print_file_ordering ();
 641     }
 642   return 0;
 643 }
 644
 645 void
 646 done (status)
 647      int status;
 648 {
 649   exit (status);
 650 }