gprof/gprof.c

   1 /*
   2  * Copyright (c) 1983, 1993, 1998, 2001, 2002
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29
  30 #include "libiberty.h"
  31 #include "gprof.h"
  32 #include "search_list.h"
  33 #include "source.h"
  34 #include "symtab.h"
  35 #include "basic_blocks.h"
  36 #include "call_graph.h"
  37 #include "cg_arcs.h"
  38 #include "cg_print.h"
  39 #include "corefile.h"
  40 #include "gmon_io.h"
  41 #include "hertz.h"
  42 #include "hist.h"
  43 #include "sym_ids.h"
  44 #include "demangle.h"
  45 #include "getopt.h"
  46
  47 static void usage PARAMS ((FILE *, int)) ATTRIBUTE_NORETURN;
  48 int main PARAMS ((int, char **));
  49
  50 const char *whoami;
  51 const char *function_mapping_file;
  52 const char *a_out_name = A_OUTNAME;
  53 long hz = HZ_WRONG;
  54
  55 /*
  56  * Default options values:
  57  */
  58 int debug_level = 0;
  59 int output_style = 0;
  60 int output_width = 80;
  61 boolean bsd_style_output = false;
  62 boolean demangle = true;
  63 boolean discard_underscores = true;
  64 boolean ignore_direct_calls = false;
  65 boolean ignore_static_funcs = false;
  66 boolean ignore_zeros = true;
  67 boolean line_granularity = false;
  68 boolean print_descriptions = true;
  69 boolean print_path = false;
  70 boolean ignore_non_functions = false;
  71 File_Format file_format = FF_AUTO;
  72
  73 boolean first_output = true;
  74
  75 char copyright[] =
  76  "@(#) Copyright (c) 1983 Regents of the University of California.\n\
  77  All rights reserved.\n";
  78
  79 static char *gmon_name = GMONNAME;      /* profile filename */
  80
  81 bfd *abfd;
  82
  83 /*
  84  * Functions that get excluded by default:
  85  */
  86 static char *default_excluded_list[] =
  87 {
  88   "_gprof_mcount", "mcount", "_mcount", "__mcount", "__mcount_internal",
  89   "__mcleanup",
  90   "<locore>", "<hicore>",
  91   0
  92 };
  93
  94 /* Codes used for the long options with no short synonyms.  150 isn't
  95    special; it's just an arbitrary non-ASCII char value.  */
  96
  97 #define OPTION_DEMANGLE         (150)
  98 #define OPTION_NO_DEMANGLE      (OPTION_DEMANGLE + 1)
  99
 100 static struct option long_options[] =
 101 {
 102   {"line", no_argument, 0, 'l'},
 103   {"no-static", no_argument, 0, 'a'},
 104   {"ignore-non-functions", no_argument, 0, 'D'},
 105
 106     /* output styles: */
 107
 108   {"annotated-source", optional_argument, 0, 'A'},
 109   {"no-annotated-source", optional_argument, 0, 'J'},
 110   {"flat-profile", optional_argument, 0, 'p'},
 111   {"no-flat-profile", optional_argument, 0, 'P'},
 112   {"graph", optional_argument, 0, 'q'},
 113   {"no-graph", optional_argument, 0, 'Q'},
 114   {"exec-counts", optional_argument, 0, 'C'},
 115   {"no-exec-counts", optional_argument, 0, 'Z'},
 116   {"function-ordering", no_argument, 0, 'r'},
 117   {"file-ordering", required_argument, 0, 'R'},
 118   {"file-info", no_argument, 0, 'i'},
 119   {"sum", no_argument, 0, 's'},
 120
 121     /* various options to affect output: */
 122
 123   {"all-lines", no_argument, 0, 'x'},
 124   {"demangle", optional_argument, 0, OPTION_DEMANGLE},
 125   {"no-demangle", no_argument, 0, OPTION_NO_DEMANGLE},
 126   {"directory-path", required_argument, 0, 'I'},
 127   {"display-unused-functions", no_argument, 0, 'z'},
 128   {"min-count", required_argument, 0, 'm'},
 129   {"print-path", no_argument, 0, 'L'},
 130   {"separate-files", no_argument, 0, 'y'},
 131   {"static-call-graph", no_argument, 0, 'c'},
 132   {"table-length", required_argument, 0, 't'},
 133   {"time", required_argument, 0, 'n'},
 134   {"no-time", required_argument, 0, 'N'},
 135   {"width", required_argument, 0, 'w'},
 136     /*
 137      * These are for backwards-compatibility only.  Their functionality
 138      * is provided by the output style options already:
 139      */
 140   {"", required_argument, 0, 'e'},
 141   {"", required_argument, 0, 'E'},
 142   {"", required_argument, 0, 'f'},
 143   {"", required_argument, 0, 'F'},
 144   {"", required_argument, 0, 'k'},
 145
 146     /* miscellaneous: */
 147
 148   {"brief", no_argument, 0, 'b'},
 149   {"debug", optional_argument, 0, 'd'},
 150   {"help", no_argument, 0, 'h'},
 151   {"file-format", required_argument, 0, 'O'},
 152   {"traditional", no_argument, 0, 'T'},
 153   {"version", no_argument, 0, 'v'},
 154   {0, no_argument, 0, 0}
 155 };
 156
 157
 158 static void
 159 usage (stream, status)
 160      FILE *stream;
 161      int status;
 162 {
 163   fprintf (stream, _("\
 164 Usage: %s [-[abcDhilLsTvwxyz]] [-[ACeEfFJnNOpPqQZ][name]] [-I dirs]\n\
 165         [-d[num]] [-k from/to] [-m min-count] [-t table-length]\n\
 166         [--[no-]annotated-source[=name]] [--[no-]exec-counts[=name]]\n\
 167         [--[no-]flat-profile[=name]] [--[no-]graph[=name]]\n\
 168         [--[no-]time=name] [--all-lines] [--brief] [--debug[=level]]\n\
 169         [--function-ordering] [--file-ordering]\n\
 170         [--directory-path=dirs] [--display-unused-functions]\n\
 171         [--file-format=name] [--file-info] [--help] [--line] [--min-count=n]\n\
 172         [--no-static] [--print-path] [--separate-files]\n\
 173         [--static-call-graph] [--sum] [--table-length=len] [--traditional]\n\
 174         [--version] [--width=n] [--ignore-non-functions]\n\
 175         [--demangle[=STYLE]] [--no-demangle]\n\
 176         [image-file] [profile-file...]\n"),
 177            whoami);
 178   if (status == 0)
 179     fprintf (stream, _("Report bugs to %s\n"), REPORT_BUGS_TO);
 180   done (status);
 181 }
 182
 183
 184 int
 185 main (argc, argv)
 186      int argc;
 187      char **argv;
 188 {
 189   char **sp, *str;
 190   Sym **cg = 0;
 191   int ch, user_specified = 0;
 192
 193 #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
 194   setlocale (LC_MESSAGES, "");
 195 #endif
 196 #if defined (HAVE_SETLOCALE)
 197   setlocale (LC_CTYPE, "");
 198 #endif
 199   bindtextdomain (PACKAGE, LOCALEDIR);
 200   textdomain (PACKAGE);
 201
 202   whoami = argv[0];
 203   xmalloc_set_program_name (whoami);
 204
 205   while ((ch = getopt_long (argc, argv,
 206         "aA::bBcCd::De:E:f:F:hiI:J::k:lLm:n::N::O:p::P::q::Q::st:Tvw:xyzZ::",
 207                             long_options, 0))
 208          != EOF)
 209     {
 210       switch (ch)
 211         {
 212         case 'a':
 213           ignore_static_funcs = true;
 214           break;
 215         case 'A':
 216           if (optarg)
 217             {
 218               sym_id_add (optarg, INCL_ANNO);
 219             }
 220           output_style |= STYLE_ANNOTATED_SOURCE;
 221           user_specified |= STYLE_ANNOTATED_SOURCE;
 222           break;
 223         case 'b':
 224           print_descriptions = false;
 225           break;
 226         case 'B':
 227           output_style |= STYLE_CALL_GRAPH;
 228           user_specified |= STYLE_CALL_GRAPH;
 229           break;
 230         case 'c':
 231           ignore_direct_calls = true;
 232           break;
 233         case 'C':
 234           if (optarg)
 235             {
 236               sym_id_add (optarg, INCL_EXEC);
 237             }
 238           output_style |= STYLE_EXEC_COUNTS;
 239           user_specified |= STYLE_EXEC_COUNTS;
 240           break;
 241         case 'd':
 242           if (optarg)
 243             {
 244               debug_level |= atoi (optarg);
 245               debug_level |= ANYDEBUG;
 246             }
 247           else
 248             {
 249               debug_level = ~0;
 250             }
 251           DBG (ANYDEBUG, printf ("[main] debug-level=0x%x\n", debug_level));
 252 #ifndef DEBUG
 253           printf (_("%s: debugging not supported; -d ignored\n"), whoami);
 254 #endif  /* DEBUG */
 255           break;
 256         case 'D':
 257           ignore_non_functions = true;
 258           break;
 259         case 'E':
 260           sym_id_add (optarg, EXCL_TIME);
 261         case 'e':
 262           sym_id_add (optarg, EXCL_GRAPH);
 263           break;
 264         case 'F':
 265           sym_id_add (optarg, INCL_TIME);
 266         case 'f':
 267           sym_id_add (optarg, INCL_GRAPH);
 268           break;
 269         case 'g':
 270           sym_id_add (optarg, EXCL_FLAT);
 271           break;
 272         case 'G':
 273           sym_id_add (optarg, INCL_FLAT);
 274           break;
 275         case 'h':
 276           usage (stdout, 0);
 277         case 'i':
 278           output_style |= STYLE_GMON_INFO;
 279           user_specified |= STYLE_GMON_INFO;
 280           break;
 281         case 'I':
 282           search_list_append (&src_search_list, optarg);
 283           break;
 284         case 'J':
 285           if (optarg)
 286             {
 287               sym_id_add (optarg, EXCL_ANNO);
 288               output_style |= STYLE_ANNOTATED_SOURCE;
 289             }
 290           else
 291             {
 292               output_style &= ~STYLE_ANNOTATED_SOURCE;
 293             }
 294           user_specified |= STYLE_ANNOTATED_SOURCE;
 295           break;
 296         case 'k':
 297           sym_id_add (optarg, EXCL_ARCS);
 298           break;
 299         case 'l':
 300           line_granularity = true;
 301           break;
 302         case 'L':
 303           print_path = true;
 304           break;
 305         case 'm':
 306           bb_min_calls = (unsigned long) strtoul (optarg, (char **) NULL, 10);
 307           break;
 308         case 'n':
 309           sym_id_add (optarg, INCL_TIME);
 310           break;
 311         case 'N':
 312           sym_id_add (optarg, EXCL_TIME);
 313           break;
 314         case 'O':
 315           switch (optarg[0])
 316             {
 317             case 'a':
 318               file_format = FF_AUTO;
 319               break;
 320             case 'm':
 321               file_format = FF_MAGIC;
 322               break;
 323             case 'b':
 324               file_format = FF_BSD;
 325               break;
 326             case '4':
 327               file_format = FF_BSD44;
 328               break;
 329             case 'p':
 330               file_format = FF_PROF;
 331               break;
 332             default:
 333               fprintf (stderr, _("%s: unknown file format %s\n"),
 334                        optarg, whoami);
 335               done (1);
 336             }
 337           break;
 338         case 'p':
 339           if (optarg)
 340             {
 341               sym_id_add (optarg, INCL_FLAT);
 342             }
 343           output_style |= STYLE_FLAT_PROFILE;
 344           user_specified |= STYLE_FLAT_PROFILE;
 345           break;
 346         case 'P':
 347           if (optarg)
 348             {
 349               sym_id_add (optarg, EXCL_FLAT);
 350               output_style |= STYLE_FLAT_PROFILE;
 351             }
 352           else
 353             {
 354               output_style &= ~STYLE_FLAT_PROFILE;
 355             }
 356           user_specified |= STYLE_FLAT_PROFILE;
 357           break;
 358         case 'q':
 359           if (optarg)
 360             {
 361               if (strchr (optarg, '/'))
 362                 {
 363                   sym_id_add (optarg, INCL_ARCS);
 364                 }
 365               else
 366                 {
 367                   sym_id_add (optarg, INCL_GRAPH);
 368                 }
 369             }
 370           output_style |= STYLE_CALL_GRAPH;
 371           user_specified |= STYLE_CALL_GRAPH;
 372           break;
 373         case 'r':
 374           output_style |= STYLE_FUNCTION_ORDER;
 375           user_specified |= STYLE_FUNCTION_ORDER;
 376           break;
 377         case 'R':
 378           output_style |= STYLE_FILE_ORDER;
 379           user_specified |= STYLE_FILE_ORDER;
 380           function_mapping_file = optarg;
 381           break;
 382         case 'Q':
 383           if (optarg)
 384             {
 385               if (strchr (optarg, '/'))
 386                 {
 387                   sym_id_add (optarg, EXCL_ARCS);
 388                 }
 389               else
 390                 {
 391                   sym_id_add (optarg, EXCL_GRAPH);
 392                 }
 393               output_style |= STYLE_CALL_GRAPH;
 394             }
 395           else
 396             {
 397               output_style &= ~STYLE_CALL_GRAPH;
 398             }
 399           user_specified |= STYLE_CALL_GRAPH;
 400           break;
 401         case 's':
 402           output_style |= STYLE_SUMMARY_FILE;
 403           user_specified |= STYLE_SUMMARY_FILE;
 404           break;
 405         case 't':
 406           bb_table_length = atoi (optarg);
 407           if (bb_table_length < 0)
 408             {
 409               bb_table_length = 0;
 410             }
 411           break;
 412         case 'T':
 413           bsd_style_output = true;
 414           break;
 415         case 'v':
 416           /* This output is intended to follow the GNU standards document.  */
 417           printf (_("GNU gprof %s\n"), VERSION);
 418           printf (_("Based on BSD gprof, copyright 1983 Regents of the University of California.\n"));
 419           printf (_("\
 420 This program is free software.  This program has absolutely no warranty.\n"));
 421           done (0);
 422         case 'w':
 423           output_width = atoi (optarg);
 424           if (output_width < 1)
 425             {
 426               output_width = 1;
 427             }
 428           break;
 429         case 'x':
 430           bb_annotate_all_lines = true;
 431           break;
 432         case 'y':
 433           create_annotation_files = true;
 434           break;
 435         case 'z':
 436           ignore_zeros = false;
 437           break;
 438         case 'Z':
 439           if (optarg)
 440             {
 441               sym_id_add (optarg, EXCL_EXEC);
 442               output_style |= STYLE_EXEC_COUNTS;
 443             }
 444           else
 445             {
 446               output_style &= ~STYLE_EXEC_COUNTS;
 447             }
 448           user_specified |= STYLE_ANNOTATED_SOURCE;
 449           break;
 450         case OPTION_DEMANGLE:
 451           demangle = true;
 452           if (optarg != NULL)
 453             {
 454               enum demangling_styles style;
 455
 456               style = cplus_demangle_name_to_style (optarg);
 457               if (style == unknown_demangling)
 458                 {
 459                   fprintf (stderr,
 460                            _("%s: unknown demangling style `%s'\n"),
 461                            whoami, optarg);
 462                   xexit (1);
 463                 }
 464
 465               cplus_demangle_set_style (style);
 466            }
 467           break;
 468         case OPTION_NO_DEMANGLE:
 469           demangle = false;
 470           break;
 471         default:
 472           usage (stderr, 1);
 473         }
 474     }
 475
 476   /* Don't allow both ordering options, they modify the arc data in-place.  */
 477   if ((user_specified & STYLE_FUNCTION_ORDER)
 478       && (user_specified & STYLE_FILE_ORDER))
 479     {
 480       fprintf (stderr,_("\
 481 %s: Only one of --function-ordering and --file-ordering may be specified.\n"),
 482                whoami);
 483       done (1);
 484     }
 485
 486   /* --sum implies --line, otherwise we'd lose b-b counts in gmon.sum */
 487   if (output_style & STYLE_SUMMARY_FILE)
 488     {
 489       line_granularity = 1;
 490     }
 491
 492   /* append value of GPROF_PATH to source search list if set: */
 493   str = (char *) getenv ("GPROF_PATH");
 494   if (str)
 495     {
 496       search_list_append (&src_search_list, str);
 497     }
 498
 499   if (optind < argc)
 500     {
 501       a_out_name = argv[optind++];
 502     }
 503   if (optind < argc)
 504     {
 505       gmon_name = argv[optind++];
 506     }
 507
 508   /*
 509    * Turn off default functions:
 510    */
 511   for (sp = &default_excluded_list[0]; *sp; sp++)
 512     {
 513       sym_id_add (*sp, EXCL_TIME);
 514       sym_id_add (*sp, EXCL_GRAPH);
 515       sym_id_add (*sp, EXCL_FLAT);
 516     }
 517
 518   /*
 519    * For line-by-line profiling, also want to keep those
 520    * functions off the flat profile:
 521    */
 522   if (line_granularity)
 523     {
 524       for (sp = &default_excluded_list[0]; *sp; sp++)
 525         {
 526           sym_id_add (*sp, EXCL_FLAT);
 527         }
 528     }
 529
 530   /*
 531    * Read symbol table from core file:
 532    */
 533   core_init (a_out_name);
 534
 535   /*
 536    * If we should ignore direct function calls, we need to load
 537    * to core's text-space:
 538    */
 539   if (ignore_direct_calls)
 540     {
 541       core_get_text_space (core_bfd);
 542     }
 543
 544   /*
 545    * Create symbols from core image:
 546    */
 547   if (line_granularity)
 548     {
 549       core_create_line_syms (core_bfd);
 550     }
 551   else
 552     {
 553       core_create_function_syms (core_bfd);
 554     }
 555
 556   /*
 557    * Translate sym specs into syms:
 558    */
 559   sym_id_parse ();
 560
 561   if (file_format == FF_PROF)
 562     {
 563 #ifdef PROF_SUPPORT_IMPLEMENTED
 564       /*
 565        * Get information about mon.out file(s):
 566        */
 567       do
 568         {
 569           mon_out_read (gmon_name);
 570           if (optind < argc)
 571             {
 572               gmon_name = argv[optind];
 573             }
 574         }
 575       while (optind++ < argc);
 576 #else
 577       fprintf (stderr,
 578                _("%s: sorry, file format `prof' is not yet supported\n"),
 579                whoami);
 580       done (1);
 581 #endif
 582     }
 583   else
 584     {
 585       /*
 586        * Get information about gmon.out file(s):
 587        */
 588       do
 589         {
 590           gmon_out_read (gmon_name);
 591           if (optind < argc)
 592             {
 593               gmon_name = argv[optind];
 594             }
 595         }
 596       while (optind++ < argc);
 597     }
 598
 599   /*
 600    * If user did not specify output style, try to guess something
 601    * reasonable:
 602    */
 603   if (output_style == 0)
 604     {
 605       if (gmon_input & (INPUT_HISTOGRAM | INPUT_CALL_GRAPH))
 606         {
 607           output_style = STYLE_FLAT_PROFILE | STYLE_CALL_GRAPH;
 608         }
 609       else
 610         {
 611           output_style = STYLE_EXEC_COUNTS;
 612         }
 613       output_style &= ~user_specified;
 614     }
 615
 616   /*
 617    * Dump a gmon.sum file if requested (before any other processing!):
 618    */
 619   if (output_style & STYLE_SUMMARY_FILE)
 620     {
 621       gmon_out_write (GMONSUM);
 622     }
 623
 624   if (gmon_input & INPUT_HISTOGRAM)
 625     {
 626       hist_assign_samples ();
 627     }
 628
 629   if (gmon_input & INPUT_CALL_GRAPH)
 630     {
 631       cg = cg_assemble ();
 632     }
 633
 634   /* do some simple sanity checks: */
 635
 636   if ((output_style & STYLE_FLAT_PROFILE)
 637       && !(gmon_input & INPUT_HISTOGRAM))
 638     {
 639       fprintf (stderr, _("%s: gmon.out file is missing histogram\n"), whoami);
 640       done (1);
 641     }
 642
 643   if ((output_style & STYLE_CALL_GRAPH) && !(gmon_input & INPUT_CALL_GRAPH))
 644     {
 645       fprintf (stderr,
 646                _("%s: gmon.out file is missing call-graph data\n"), whoami);
 647       done (1);
 648     }
 649
 650   /* output whatever user whishes to see: */
 651
 652   if (cg && (output_style & STYLE_CALL_GRAPH) && bsd_style_output)
 653     {
 654       cg_print (cg);            /* print the dynamic profile */
 655     }
 656
 657   if (output_style & STYLE_FLAT_PROFILE)
 658     {
 659       hist_print ();            /* print the flat profile */
 660     }
 661
 662   if (cg && (output_style & STYLE_CALL_GRAPH))
 663     {
 664       if (!bsd_style_output)
 665         {
 666           cg_print (cg);        /* print the dynamic profile */
 667         }
 668       cg_print_index ();
 669     }
 670
 671   if (output_style & STYLE_EXEC_COUNTS)
 672     {
 673       print_exec_counts ();
 674     }
 675
 676   if (output_style & STYLE_ANNOTATED_SOURCE)
 677     {
 678       print_annotated_source ();
 679     }
 680   if (output_style & STYLE_FUNCTION_ORDER)
 681     {
 682       cg_print_function_ordering ();
 683     }
 684   if (output_style & STYLE_FILE_ORDER)
 685     {
 686       cg_print_file_ordering ();
 687     }
 688   return 0;
 689 }
 690
 691 void
 692 done (status)
 693      int status;
 694 {
 695   exit (status);
 696 }