gprof/gmon_io.c

   1 /* gmon_io.c - Input and output from/to gmon.out files.
   2
   3    Copyright 2000, 2001, 2002 Free Software Foundation, Inc.
   4
   5    This file is part of GNU Binutils.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  20    02111-1307, USA.  */
  21 \f
  22 #include "gprof.h"
  23 #include "search_list.h"
  24 #include "source.h"
  25 #include "symtab.h"
  26 #include "cg_arcs.h"
  27 #include "basic_blocks.h"
  28 #include "corefile.h"
  29 #include "call_graph.h"
  30 #include "gmon_io.h"
  31 #include "gmon_out.h"
  32 #include "gmon.h"               /* Fetch header for old format.  */
  33 #include "hertz.h"
  34 #include "hist.h"
  35 #include "libiberty.h"
  36
  37 #ifdef BFD_HOST_U_64_BIT
  38 static int gmon_io_read_64 PARAMS ((FILE *, BFD_HOST_U_64_BIT *));
  39 static int gmon_io_write_64 PARAMS ((FILE *, BFD_HOST_U_64_BIT));
  40 #endif
  41 static int gmon_read_raw_arc
  42   PARAMS ((FILE *, bfd_vma *, bfd_vma *, unsigned long *));
  43 static int gmon_write_raw_arc
  44   PARAMS ((FILE *, bfd_vma, bfd_vma, unsigned long));
  45
  46 int gmon_input = 0;
  47 int gmon_file_version = 0;      /* 0 == old (non-versioned) file format.  */
  48
  49 int
  50 gmon_io_read_32 (ifp, valp)
  51      FILE *ifp;
  52      unsigned int *valp;
  53 {
  54   char buf[4];
  55
  56   if (fread (buf, 1, 4, ifp) != 4)
  57     return 1;
  58   *valp = bfd_get_32 (core_bfd, buf);
  59   return 0;
  60 }
  61
  62 #ifdef BFD_HOST_U_64_BIT
  63 static int
  64 gmon_io_read_64 (ifp, valp)
  65      FILE *ifp;
  66      BFD_HOST_U_64_BIT *valp;
  67 {
  68   char buf[8];
  69
  70   if (fread (buf, 1, 8, ifp) != 8)
  71     return 1;
  72   *valp = bfd_get_64 (core_bfd, buf);
  73   return 0;
  74 }
  75 #endif
  76
  77 int
  78 gmon_io_read_vma (ifp, valp)
  79      FILE *ifp;
  80      bfd_vma *valp;
  81 {
  82   unsigned int val32;
  83 #ifdef BFD_HOST_U_64_BIT
  84   BFD_HOST_U_64_BIT val64;
  85 #endif
  86
  87   switch (bfd_arch_bits_per_address (core_bfd))
  88     {
  89     case 32:
  90       if (gmon_io_read_32 (ifp, &val32))
  91         return 1;
  92       *valp = val32;
  93       break;
  94
  95 #ifdef BFD_HOST_U_64_BIT
  96     case 64:
  97       if (gmon_io_read_64 (ifp, &val64))
  98         return 1;
  99       *valp = val64;
 100       break;
 101 #endif
 102
 103     default:
 104       fprintf (stderr, _("%s: bits per address has unexpected value of %u\n"),
 105                whoami, bfd_arch_bits_per_address (core_bfd));
 106       done (1);
 107     }
 108   return 0;
 109 }
 110
 111 int
 112 gmon_io_read (ifp, buf, n)
 113      FILE *ifp;
 114      char *buf;
 115      size_t n;
 116 {
 117   if (fread (buf, 1, n, ifp) != n)
 118     return 1;
 119   return 0;
 120 }
 121
 122 int
 123 gmon_io_write_32 (ofp, val)
 124      FILE *ofp;
 125      unsigned int val;
 126 {
 127   char buf[4];
 128
 129   bfd_put_32 (core_bfd, (bfd_vma) val, buf);
 130   if (fwrite (buf, 1, 4, ofp) != 4)
 131     return 1;
 132   return 0;
 133 }
 134
 135 #ifdef BFD_HOST_U_64_BIT
 136 static int
 137 gmon_io_write_64 (ofp, val)
 138      FILE *ofp;
 139      BFD_HOST_U_64_BIT val;
 140 {
 141   char buf[8];
 142
 143   bfd_put_64 (core_bfd, (bfd_vma) val, buf);
 144   if (fwrite (buf, 1, 8, ofp) != 8)
 145     return 1;
 146   return 0;
 147 }
 148 #endif
 149
 150 int
 151 gmon_io_write_vma (ofp, val)
 152      FILE *ofp;
 153      bfd_vma val;
 154 {
 155
 156   switch (bfd_arch_bits_per_address (core_bfd))
 157     {
 158     case 32:
 159       if (gmon_io_write_32 (ofp, (unsigned int) val))
 160         return 1;
 161       break;
 162
 163 #ifdef BFD_HOST_U_64_BIT
 164     case 64:
 165       if (gmon_io_write_64 (ofp, (BFD_HOST_U_64_BIT) val))
 166         return 1;
 167       break;
 168 #endif
 169
 170     default:
 171       fprintf (stderr, _("%s: bits per address has unexpected value of %u\n"),
 172                whoami, bfd_arch_bits_per_address (core_bfd));
 173       done (1);
 174     }
 175   return 0;
 176 }
 177
 178 int
 179 gmon_io_write_8 (ofp, val)
 180      FILE *ofp;
 181      unsigned int val;
 182 {
 183   char buf[1];
 184
 185   bfd_put_8 (core_bfd, val, buf);
 186   if (fwrite (buf, 1, 1, ofp) != 1)
 187     return 1;
 188   return 0;
 189 }
 190
 191 int
 192 gmon_io_write (ofp, buf, n)
 193      FILE *ofp;
 194      char *buf;
 195      size_t n;
 196 {
 197   if (fwrite (buf, 1, n, ofp) != n)
 198     return 1;
 199   return 0;
 200 }
 201
 202 static int
 203 gmon_read_raw_arc (ifp, fpc, spc, cnt)
 204      FILE *ifp;
 205      bfd_vma *fpc;
 206      bfd_vma *spc;
 207      unsigned long *cnt;
 208 {
 209 #ifdef BFD_HOST_U_64_BIT
 210   BFD_HOST_U_64_BIT cnt64;
 211 #endif
 212   unsigned int cnt32;
 213
 214   if (gmon_io_read_vma (ifp, fpc)
 215       || gmon_io_read_vma (ifp, spc))
 216     return 1;
 217
 218   switch (bfd_arch_bits_per_address (core_bfd))
 219     {
 220     case 32:
 221       if (gmon_io_read_32 (ifp, &cnt32))
 222         return 1;
 223       *cnt = cnt32;
 224       break;
 225
 226 #ifdef BFD_HOST_U_64_BIT
 227     case 64:
 228       if (gmon_io_read_64 (ifp, &cnt64))
 229         return 1;
 230       *cnt = cnt64;
 231       break;
 232 #endif
 233
 234     default:
 235       fprintf (stderr, _("%s: bits per address has unexpected value of %u\n"),
 236                whoami, bfd_arch_bits_per_address (core_bfd));
 237       done (1);
 238     }
 239   return 0;
 240 }
 241
 242 static int
 243 gmon_write_raw_arc (ofp, fpc, spc, cnt)
 244      FILE *ofp;
 245      bfd_vma fpc;
 246      bfd_vma spc;
 247      unsigned long cnt;
 248 {
 249
 250   if (gmon_io_write_vma (ofp, fpc)
 251       || gmon_io_write_vma (ofp, spc))
 252     return 1;
 253
 254   switch (bfd_arch_bits_per_address (core_bfd))
 255     {
 256     case 32:
 257       if (gmon_io_write_32 (ofp, (unsigned int) cnt))
 258         return 1;
 259       break;
 260
 261 #ifdef BFD_HOST_U_64_BIT
 262     case 64:
 263       if (gmon_io_write_64 (ofp, (BFD_HOST_U_64_BIT) cnt))
 264         return 1;
 265       break;
 266 #endif
 267
 268     default:
 269       fprintf (stderr, _("%s: bits per address has unexpected value of %u\n"),
 270                whoami, bfd_arch_bits_per_address (core_bfd));
 271       done (1);
 272     }
 273   return 0;
 274 }
 275
 276 void
 277 gmon_out_read (filename)
 278      const char *filename;
 279 {
 280   FILE *ifp;
 281   struct gmon_hdr ghdr;
 282   unsigned char tag;
 283   int nhist = 0, narcs = 0, nbbs = 0;
 284
 285   /* Open gmon.out file.  */
 286   if (strcmp (filename, "-") == 0)
 287     {
 288       ifp = stdin;
 289 #ifdef SET_BINARY
 290       SET_BINARY (fileno (stdin));
 291 #endif
 292     }
 293   else
 294     {
 295       ifp = fopen (filename, FOPEN_RB);
 296
 297       if (!ifp)
 298         {
 299           perror (filename);
 300           done (1);
 301         }
 302     }
 303
 304   if (fread (&ghdr, sizeof (struct gmon_hdr), 1, ifp) != 1)
 305     {
 306       fprintf (stderr, _("%s: file too short to be a gmon file\n"),
 307                filename);
 308       done (1);
 309     }
 310
 311   if ((file_format == FF_MAGIC)
 312       || (file_format == FF_AUTO && !strncmp (&ghdr.cookie[0], GMON_MAGIC, 4)))
 313     {
 314       if (file_format == FF_MAGIC && strncmp (&ghdr.cookie[0], GMON_MAGIC, 4))
 315         {
 316           fprintf (stderr, _("%s: file `%s' has bad magic cookie\n"),
 317                    whoami, filename);
 318           done (1);
 319         }
 320
 321       /* Right magic, so it's probably really a new gmon.out file.  */
 322       gmon_file_version = bfd_get_32 (core_bfd, (bfd_byte *) ghdr.version);
 323
 324       if (gmon_file_version != GMON_VERSION && gmon_file_version != 0)
 325         {
 326           fprintf (stderr,
 327                    _("%s: file `%s' has unsupported version %d\n"),
 328                    whoami, filename, gmon_file_version);
 329           done (1);
 330         }
 331
 332       /* Read in all the records.  */
 333       while (fread (&tag, sizeof (tag), 1, ifp) == 1)
 334         {
 335           switch (tag)
 336             {
 337             case GMON_TAG_TIME_HIST:
 338               ++nhist;
 339               gmon_input |= INPUT_HISTOGRAM;
 340               hist_read_rec (ifp, filename);
 341               break;
 342
 343             case GMON_TAG_CG_ARC:
 344               ++narcs;
 345               gmon_input |= INPUT_CALL_GRAPH;
 346               cg_read_rec (ifp, filename);
 347               break;
 348
 349             case GMON_TAG_BB_COUNT:
 350               ++nbbs;
 351               gmon_input |= INPUT_BB_COUNTS;
 352               bb_read_rec (ifp, filename);
 353               break;
 354
 355             default:
 356               fprintf (stderr,
 357                        _("%s: %s: found bad tag %d (file corrupted?)\n"),
 358                        whoami, filename, tag);
 359               done (1);
 360             }
 361         }
 362     }
 363   else if (file_format == FF_AUTO
 364            || file_format == FF_BSD
 365            || file_format == FF_BSD44)
 366     {
 367       struct hdr
 368       {
 369         bfd_vma low_pc;
 370         bfd_vma high_pc;
 371         int ncnt;
 372       };
 373       int i, samp_bytes, header_size = 0;
 374       unsigned long count;
 375       bfd_vma from_pc, self_pc;
 376       static struct hdr h;
 377       UNIT raw_bin_count;
 378       struct hdr tmp;
 379       int version;
 380
 381       /* Information from a gmon.out file is in two parts: an array of
 382          sampling hits within pc ranges, and the arcs.  */
 383       gmon_input = INPUT_HISTOGRAM | INPUT_CALL_GRAPH;
 384
 385       /* This fseek() ought to work even on stdin as long as it's
 386          not an interactive device (heck, is there anybody who would
 387          want to type in a gmon.out at the terminal?).  */
 388       if (fseek (ifp, 0, SEEK_SET) < 0)
 389         {
 390           perror (filename);
 391           done (1);
 392         }
 393
 394       /* The beginning of the old BSD header and the 4.4BSD header
 395          are the same: lowpc, highpc, ncnt  */
 396       if (gmon_io_read_vma (ifp, &tmp.low_pc)
 397           || gmon_io_read_vma (ifp, &tmp.high_pc)
 398           || gmon_io_read_32 (ifp, &tmp.ncnt))
 399         {
 400  bad_gmon_file:
 401           fprintf (stderr, _("%s: file too short to be a gmon file\n"),
 402                    filename);
 403           done (1);
 404         }
 405
 406       /* Check to see if this a 4.4BSD-style header.  */
 407       if (gmon_io_read_32 (ifp, &version))
 408         goto bad_gmon_file;
 409
 410       if (version == GMONVERSION)
 411         {
 412           int profrate;
 413
 414           /* 4.4BSD format header.  */
 415           if (gmon_io_read_32 (ifp, &profrate))
 416             goto bad_gmon_file;
 417
 418           if (!s_highpc)
 419             hz = profrate;
 420           else if (hz != profrate)
 421             {
 422               fprintf (stderr,
 423                        _("%s: profiling rate incompatible with first gmon file\n"),
 424                        filename);
 425               done (1);
 426             }
 427
 428           switch (bfd_arch_bits_per_address (core_bfd))
 429             {
 430             case 32:
 431               header_size = GMON_HDRSIZE_BSD44_32;
 432               break;
 433
 434             case 64:
 435               header_size = GMON_HDRSIZE_BSD44_64;
 436               break;
 437
 438             default:
 439               fprintf (stderr,
 440                        _("%s: bits per address has unexpected value of %u\n"),
 441                        whoami, bfd_arch_bits_per_address (core_bfd));
 442               done (1);
 443             }
 444         }
 445       else
 446         {
 447           /* Old style BSD format.  */
 448           if (file_format == FF_BSD44)
 449             {
 450               fprintf (stderr, _("%s: file `%s' has bad magic cookie\n"),
 451                        whoami, filename);
 452               done (1);
 453             }
 454
 455           switch (bfd_arch_bits_per_address (core_bfd))
 456             {
 457             case 32:
 458               header_size = GMON_HDRSIZE_OLDBSD_32;
 459               break;
 460
 461             case 64:
 462               header_size = GMON_HDRSIZE_OLDBSD_64;
 463               break;
 464
 465             default:
 466               fprintf (stderr,
 467                        _("%s: bits per address has unexpected value of %u\n"),
 468                        whoami, bfd_arch_bits_per_address (core_bfd));
 469               done (1);
 470             }
 471         }
 472
 473       /* Position the file to after the header.  */
 474       if (fseek (ifp, header_size, SEEK_SET) < 0)
 475         {
 476           perror (filename);
 477           done (1);
 478         }
 479
 480       if (s_highpc && (tmp.low_pc != h.low_pc
 481                        || tmp.high_pc != h.high_pc || tmp.ncnt != h.ncnt))
 482         {
 483           fprintf (stderr, _("%s: incompatible with first gmon file\n"),
 484                    filename);
 485           done (1);
 486         }
 487
 488       h = tmp;
 489       s_lowpc = (bfd_vma) h.low_pc;
 490       s_highpc = (bfd_vma) h.high_pc;
 491       lowpc = (bfd_vma) h.low_pc / sizeof (UNIT);
 492       highpc = (bfd_vma) h.high_pc / sizeof (UNIT);
 493       samp_bytes = h.ncnt - header_size;
 494       hist_num_bins = samp_bytes / sizeof (UNIT);
 495
 496       DBG (SAMPLEDEBUG,
 497            printf ("[gmon_out_read] lowpc 0x%lx highpc 0x%lx ncnt %d\n",
 498                    (unsigned long) h.low_pc, (unsigned long) h.high_pc,
 499                    h.ncnt);
 500            printf ("[gmon_out_read]   s_lowpc 0x%lx   s_highpc 0x%lx\n",
 501                    (unsigned long) s_lowpc, (unsigned long) s_highpc);
 502            printf ("[gmon_out_read]     lowpc 0x%lx     highpc 0x%lx\n",
 503                    (unsigned long) lowpc, (unsigned long) highpc);
 504            printf ("[gmon_out_read] samp_bytes %d hist_num_bins %d\n",
 505                    samp_bytes, hist_num_bins));
 506
 507       /* Make sure that we have sensible values.  */
 508       if (samp_bytes < 0 || lowpc > highpc)
 509         {
 510           fprintf (stderr,
 511             _("%s: file '%s' does not appear to be in gmon.out format\n"),
 512             whoami, filename);
 513           done (1);
 514         }
 515
 516       if (hist_num_bins)
 517         ++nhist;
 518
 519       if (!hist_sample)
 520         {
 521           hist_sample =
 522             (int *) xmalloc (hist_num_bins * sizeof (hist_sample[0]));
 523
 524           memset (hist_sample, 0, hist_num_bins * sizeof (hist_sample[0]));
 525         }
 526
 527       for (i = 0; i < hist_num_bins; ++i)
 528         {
 529           if (fread (raw_bin_count, sizeof (raw_bin_count), 1, ifp) != 1)
 530             {
 531               fprintf (stderr,
 532                        _("%s: unexpected EOF after reading %d/%d bins\n"),
 533                        whoami, --i, hist_num_bins);
 534               done (1);
 535             }
 536
 537           hist_sample[i] += bfd_get_16 (core_bfd, (bfd_byte *) raw_bin_count);
 538         }
 539
 540       /* The rest of the file consists of a bunch of
 541          <from,self,count> tuples.  */
 542       while (gmon_read_raw_arc (ifp, &from_pc, &self_pc, &count) == 0)
 543         {
 544           ++narcs;
 545
 546           DBG (SAMPLEDEBUG,
 547              printf ("[gmon_out_read] frompc 0x%lx selfpc 0x%lx count %lu\n",
 548                      (unsigned long) from_pc, (unsigned long) self_pc, count));
 549
 550           /* Add this arc.  */
 551           cg_tally (from_pc, self_pc, count);
 552         }
 553
 554       fclose (ifp);
 555
 556       if (hz == HZ_WRONG)
 557         {
 558           /* How many ticks per second?  If we can't tell, report
 559              time in ticks.  */
 560           hz = hertz ();
 561
 562           if (hz == HZ_WRONG)
 563             {
 564               hz = 1;
 565               fprintf (stderr, _("time is in ticks, not seconds\n"));
 566             }
 567         }
 568     }
 569   else
 570     {
 571       fprintf (stderr, _("%s: don't know how to deal with file format %d\n"),
 572                whoami, file_format);
 573       done (1);
 574     }
 575
 576   if (output_style & STYLE_GMON_INFO)
 577     {
 578       printf (_("File `%s' (version %d) contains:\n"),
 579               filename, gmon_file_version);
 580       printf (nhist == 1 ?
 581               _("\t%d histogram record\n") :
 582               _("\t%d histogram records\n"), nhist);
 583       printf (narcs == 1 ?
 584               _("\t%d call-graph record\n") :
 585               _("\t%d call-graph records\n"), narcs);
 586       printf (nbbs == 1 ?
 587               _("\t%d basic-block count record\n") :
 588               _("\t%d basic-block count records\n"), nbbs);
 589       first_output = FALSE;
 590     }
 591 }
 592
 593
 594 void
 595 gmon_out_write (filename)
 596      const char *filename;
 597 {
 598   FILE *ofp;
 599   struct gmon_hdr ghdr;
 600
 601   ofp = fopen (filename, FOPEN_WB);
 602   if (!ofp)
 603     {
 604       perror (filename);
 605       done (1);
 606     }
 607
 608   if (file_format == FF_AUTO || file_format == FF_MAGIC)
 609     {
 610       /* Write gmon header.  */
 611
 612       memcpy (&ghdr.cookie[0], GMON_MAGIC, 4);
 613       bfd_put_32 (core_bfd, (bfd_vma) GMON_VERSION, (bfd_byte *) ghdr.version);
 614
 615       if (fwrite (&ghdr, sizeof (ghdr), 1, ofp) != 1)
 616         {
 617           perror (filename);
 618           done (1);
 619         }
 620
 621       /* Write execution time histogram if we have one.  */
 622       if (gmon_input & INPUT_HISTOGRAM)
 623         hist_write_hist (ofp, filename);
 624
 625       /* Write call graph arcs if we have any.  */
 626       if (gmon_input & INPUT_CALL_GRAPH)
 627         cg_write_arcs (ofp, filename);
 628
 629       /* Write basic-block info if we have it.  */
 630       if (gmon_input & INPUT_BB_COUNTS)
 631         bb_write_blocks (ofp, filename);
 632     }
 633   else if (file_format == FF_BSD || file_format == FF_BSD44)
 634     {
 635       UNIT raw_bin_count;
 636       int i, hdrsize;
 637       unsigned padsize;
 638       char pad[3*4];
 639       Arc *arc;
 640       Sym *sym;
 641
 642       memset (pad, 0, sizeof (pad));
 643
 644       hdrsize = 0;
 645       /* Decide how large the header will be.  Use the 4.4BSD format
 646          header if explicitly specified, or if the profiling rate is
 647          non-standard.  Otherwise, use the old BSD format.  */
 648       if (file_format == FF_BSD44
 649           || hz != hertz())
 650         {
 651           padsize = 3*4;
 652           switch (bfd_arch_bits_per_address (core_bfd))
 653             {
 654             case 32:
 655               hdrsize = GMON_HDRSIZE_BSD44_32;
 656               break;
 657
 658             case 64:
 659               hdrsize = GMON_HDRSIZE_BSD44_64;
 660               break;
 661
 662             default:
 663               fprintf (stderr,
 664                        _("%s: bits per address has unexpected value of %u\n"),
 665                        whoami, bfd_arch_bits_per_address (core_bfd));
 666               done (1);
 667             }
 668         }
 669       else
 670         {
 671           padsize = 0;
 672           switch (bfd_arch_bits_per_address (core_bfd))
 673             {
 674             case 32:
 675               hdrsize = GMON_HDRSIZE_OLDBSD_32;
 676               break;
 677
 678             case 64:
 679               hdrsize = GMON_HDRSIZE_OLDBSD_64;
 680               /* FIXME: Checking host compiler defines here means that we can't
 681                  use a cross gprof alpha OSF.  */
 682 #if defined(__alpha__) && defined (__osf__)
 683               padsize = 4;
 684 #endif
 685               break;
 686
 687             default:
 688               fprintf (stderr,
 689                        _("%s: bits per address has unexpected value of %u\n"),
 690                        whoami, bfd_arch_bits_per_address (core_bfd));
 691               done (1);
 692             }
 693         }
 694
 695       /* Write the parts of the headers that are common to both the
 696          old BSD and 4.4BSD formats.  */
 697       if (gmon_io_write_vma (ofp, s_lowpc)
 698           || gmon_io_write_vma (ofp, s_highpc)
 699           || gmon_io_write_32 (ofp, hist_num_bins * sizeof (UNIT) + hdrsize))
 700         {
 701           perror (filename);
 702           done (1);
 703         }
 704
 705       /* Write out the 4.4BSD header bits, if that's what we're using.  */
 706       if (file_format == FF_BSD44
 707           || hz != hertz())
 708         {
 709           if (gmon_io_write_32 (ofp, GMONVERSION)
 710               || gmon_io_write_32 (ofp, (unsigned int) hz))
 711             {
 712               perror (filename);
 713               done (1);
 714             }
 715         }
 716
 717       /* Now write out any necessary padding after the meaningful
 718          header bits.  */
 719       if (padsize != 0
 720           && fwrite (pad, 1, padsize, ofp) != padsize)
 721         {
 722           perror (filename);
 723           done (1);
 724         }
 725
 726       /* Dump the samples.  */
 727       for (i = 0; i < hist_num_bins; ++i)
 728         {
 729           bfd_put_16 (core_bfd, (bfd_vma) hist_sample[i],
 730                       (bfd_byte *) &raw_bin_count[0]);
 731           if (fwrite (&raw_bin_count[0], sizeof (raw_bin_count), 1, ofp) != 1)
 732             {
 733               perror (filename);
 734               done (1);
 735             }
 736         }
 737
 738       /* Dump the normalized raw arc information.  */
 739       for (sym = symtab.base; sym < symtab.limit; ++sym)
 740         {
 741           for (arc = sym->cg.children; arc; arc = arc->next_child)
 742             {
 743               if (gmon_write_raw_arc (ofp, arc->parent->addr,
 744                                       arc->child->addr, arc->count))
 745                 {
 746                   perror (filename);
 747                   done (1);
 748                 }
 749               DBG (SAMPLEDEBUG,
 750                    printf ("[dumpsum] frompc 0x%lx selfpc 0x%lx count %lu\n",
 751                            (unsigned long) arc->parent->addr,
 752                            (unsigned long) arc->child->addr, arc->count));
 753             }
 754         }
 755
 756       fclose (ofp);
 757     }
 758   else
 759     {
 760       fprintf (stderr, _("%s: don't know how to deal with file format %d\n"),
 761                whoami, file_format);
 762       done (1);
 763     }
 764 }