binutils-gdb/gprof/gprof.c

/* Copyright (c) 1983, 1998, 2001, 2002 Regents of the University of California.
   All rights reserved.

   Redistribution and use in source and binary forms, with or without
   modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright notice,
      this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.
    * Neither the name of the University of California, Berkeley 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 BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  THE POSSIBILITY OF SUCH DAMAGE.  */

#include "libiberty.h"
#include "gprof.h"
#include "search_list.h"
#include "source.h"
#include "symtab.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 "sym_ids.h"
#include "demangle.h"
#include "getopt.h"

static void usage PARAMS ((FILE *, int)) ATTRIBUTE_NORETURN;
int main PARAMS ((int, char **));

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;
boolean bsd_style_output = false;
boolean demangle = true;
boolean discard_underscores = true;
boolean ignore_direct_calls = false;
boolean ignore_static_funcs = false;
boolean ignore_zeros = true;
boolean line_granularity = false;
boolean print_descriptions = true;
boolean print_path = false;
boolean ignore_non_functions = false;
File_Format file_format = FF_AUTO;

boolean 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
usage (stream, status)
     FILE *stream;
     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
main (argc, argv)
     int argc;
     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);
}