osprey-gcc/gcc/gcov-dump.c

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/* Dump a gcov file, for debugging use.
   Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
   Contributed by Nathan Sidwell <nathan@codesourcery.com>

Gcov is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.

Gcov is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with Gcov; see the file COPYING.  If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */

#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tm.h"
#include "version.h"
#include <getopt.h>
#define IN_GCOV (-1)
#include "gcov-io.h"
#include "gcov-io.c"

static void dump_file (const char *);
static void print_prefix (const char *, unsigned, gcov_position_t);
static void print_usage (void);
static void print_version (void);
static void tag_function (const char *, unsigned, unsigned);
static void tag_blocks (const char *, unsigned, unsigned);
static void tag_arcs (const char *, unsigned, unsigned);
static void tag_lines (const char *, unsigned, unsigned);
static void tag_counters (const char *, unsigned, unsigned);
static void tag_summary (const char *, unsigned, unsigned);
extern int main (int, char **);

typedef struct tag_format
{
  unsigned tag;
  char const *name;
  void (*proc) (const char *, unsigned, unsigned);
} tag_format_t;

static int flag_dump_contents = 0;
static int flag_dump_positions = 0;

static const struct option options[] =
{
  { "help",                 no_argument,       NULL, 'h' },
  { "version",              no_argument,       NULL, 'v' },
  { "long",                 no_argument,       NULL, 'l' },
  { "positions",      no_argument,       NULL, 'o' },
  { 0, 0, 0, 0 }
};

static const tag_format_t tag_table[] =
{
  {0, "NOP", NULL},
  {0, "UNKNOWN", NULL},
  {0, "COUNTERS", tag_counters},
  {GCOV_TAG_FUNCTION, "FUNCTION", tag_function},
  {GCOV_TAG_BLOCKS, "BLOCKS", tag_blocks},
  {GCOV_TAG_ARCS, "ARCS", tag_arcs},
  {GCOV_TAG_LINES, "LINES", tag_lines},
  {GCOV_TAG_OBJECT_SUMMARY, "OBJECT_SUMMARY", tag_summary},
  {GCOV_TAG_PROGRAM_SUMMARY, "PROGRAM_SUMMARY", tag_summary},
  {0, NULL, NULL}
};

int
main (int argc ATTRIBUTE_UNUSED, char **argv)
{
  int opt;

  /* Unlock the stdio streams.  */
  unlock_std_streams ();

  while ((opt = getopt_long (argc, argv, "hlpv", options, NULL)) != -1)
    {
      switch (opt)
  {
  case 'h':
    print_usage ();
    break;
  case 'v':
    print_version ();
    break;
  case 'l':
    flag_dump_contents = 1;
    break;
  case 'p':
    flag_dump_positions = 1;
    break;
  default:
    fprintf (stderr, "unknown flag `%c'\n", opt);
  }
    }

  while (argv[optind])
    dump_file (argv[optind++]);
  return 0;
}

static void
print_usage (void)
{
  printf ("Usage: gcov-dump [OPTION] ... gcovfiles\n");
  printf ("Print coverage file contents\n");
  printf ("  -h, --help           Print this help\n");
  printf ("  -v, --version        Print version number\n");
  printf ("  -l, --long           Dump record contents too\n");
  printf ("  -p, --positions      Dump record positions\n");
}

static void
print_version (void)
{
  printf ("gcov-dump (GCC) %s\n", version_string);
  printf ("Copyright (C) 2003 Free Software Foundation, Inc.\n");
  printf ("This is free software; see the source for copying conditions.\n"
      "There is NO warranty; not even for MERCHANTABILITY or \n"
    "FITNESS FOR A PARTICULAR PURPOSE.\n\n");
}

static void
print_prefix (const char *filename, unsigned depth, gcov_position_t position)
{
  static const char prefix[] = "    ";

  printf ("%s:", filename);
  if (flag_dump_positions)
    printf ("%lu:", (unsigned long) position);
  printf ("%.*s", (int) depth, prefix);
}

static void
dump_file (const char *filename)
{
  unsigned tags[4];
  unsigned depth = 0;

  if (!gcov_open (filename, 1))
    {
      fprintf (stderr, "%s:cannot open\n", filename);
      return;
    }

  /* magic */
  {
    unsigned magic = gcov_read_unsigned ();
    unsigned version;
    const char *type = NULL;
    int endianness = 0;
    char m[4], v[4];
    
    if ((endianness = gcov_magic (magic, GCOV_DATA_MAGIC)))
      type = "data";
    else if ((endianness = gcov_magic (magic, GCOV_NOTE_MAGIC)))
      type = "note";
    else
      {
  printf ("%s:not a gcov file\n", filename);
  gcov_close ();
  return;
      }
    version = gcov_read_unsigned ();
    GCOV_UNSIGNED2STRING (v, version);
    GCOV_UNSIGNED2STRING (m, magic);
    
    printf ("%s:%s:magic `%.4s':version `%.4s'%s\n", filename, type,
      m, v, endianness < 0 ? " (swapped endianness)" : "");
    if (version != GCOV_VERSION)
      {
  char e[4];
  
  GCOV_UNSIGNED2STRING (e, GCOV_VERSION);
  printf ("%s:warning:current version is `%.4s'\n", filename, e);
      }
  }

  /* stamp */
  {
    unsigned stamp = gcov_read_unsigned ();

    printf ("%s:stamp %lu\n", filename, (unsigned long)stamp);
  }
  
  while (1)
    {
      gcov_position_t base, position = gcov_position ();
      unsigned tag, length;
      tag_format_t const *format;
      unsigned tag_depth;
      int error;
      unsigned mask;

      tag = gcov_read_unsigned ();
      if (!tag)
  break;
      length = gcov_read_unsigned ();
      base = gcov_position ();
      mask = GCOV_TAG_MASK (tag) >> 1;
      for (tag_depth = 4; mask; mask >>= 8)
  {
    if ((mask & 0xff) != 0xff)
      {
        printf ("%s:tag `%08x' is invalid\n", filename, tag);
        break;
      }
    tag_depth--;
  }
      for (format = tag_table; format->name; format++)
  if (format->tag == tag)
    goto found;
      format = &tag_table[GCOV_TAG_IS_COUNTER (tag) ? 2 : 1];
    found:;
      if (tag)
  {
    if (depth && depth < tag_depth)
      {
        if (!GCOV_TAG_IS_SUBTAG (tags[depth - 1], tag))
    printf ("%s:tag `%08x' is incorrectly nested\n",
      filename, tag);
      }
    depth = tag_depth;
    tags[depth - 1] = tag;
  }

      print_prefix (filename, tag_depth, position);
      printf ("%08x:%4u:%s", tag, length, format->name);
      if (format->proc)
  (*format->proc) (filename, tag, length);

      printf ("\n");
      if (flag_dump_contents && format->proc)
  {
    unsigned long actual_length = gcov_position () - base;

    if (actual_length > length)
      printf ("%s:record size mismatch %lu bytes overread\n",
        filename, actual_length - length);
    else if (length > actual_length)
      printf ("%s:record size mismatch %lu bytes unread\n",
        filename, length - actual_length);
  }
      gcov_sync (base, length);
      if ((error = gcov_is_error ()))
  {
    printf (error < 0 ? "%s:counter overflow at %lu\n" :
      "%s:read error at %lu\n", filename,
      (long unsigned) gcov_position ());
    break;
  }
    }
  gcov_close ();
}

static void
tag_function (const char *filename ATTRIBUTE_UNUSED,
        unsigned tag ATTRIBUTE_UNUSED, unsigned length ATTRIBUTE_UNUSED)
{
  unsigned long pos = gcov_position ();

  printf (" ident=%u", gcov_read_unsigned ());
  printf (", checksum=0x%08x", gcov_read_unsigned ());

  if (gcov_position () - pos < length)
    {
      const char *name;

      name = gcov_read_string ();
      printf (", `%s'", name ? name : "NULL");
      name = gcov_read_string ();
      printf (" %s", name ? name : "NULL");
      printf (":%u", gcov_read_unsigned ());
    }
}

static void
tag_blocks (const char *filename ATTRIBUTE_UNUSED,
      unsigned tag ATTRIBUTE_UNUSED, unsigned length ATTRIBUTE_UNUSED)
{
  unsigned n_blocks = GCOV_TAG_BLOCKS_NUM (length);

  printf (" %u blocks", n_blocks);

  if (flag_dump_contents)
    {
      unsigned ix;

      for (ix = 0; ix != n_blocks; ix++)
  {
    if (!(ix & 7))
      {
        printf ("\n");
        print_prefix (filename, 0, gcov_position ());
        printf ("\t\t%u", ix);
      }
    printf (" %04x", gcov_read_unsigned ());
  }
    }
}

static void
tag_arcs (const char *filename ATTRIBUTE_UNUSED,
    unsigned tag ATTRIBUTE_UNUSED, unsigned length ATTRIBUTE_UNUSED)
{
  unsigned n_arcs = GCOV_TAG_ARCS_NUM (length);

  printf (" %u arcs", n_arcs);
  if (flag_dump_contents)
    {
      unsigned ix;
      unsigned blockno = gcov_read_unsigned ();

      for (ix = 0; ix != n_arcs; ix++)
  {
    unsigned dst, flags;

    if (!(ix & 3))
      {
        printf ("\n");
        print_prefix (filename, 0, gcov_position ());
        printf ("\tblock %u:", blockno);
      }
    dst = gcov_read_unsigned ();
    flags = gcov_read_unsigned ();
    printf (" %u:%04x", dst, flags);
  }
    }
}

static void
tag_lines (const char *filename ATTRIBUTE_UNUSED,
     unsigned tag ATTRIBUTE_UNUSED, unsigned length ATTRIBUTE_UNUSED)
{
  if (flag_dump_contents)
    {
      unsigned blockno = gcov_read_unsigned ();
      char const *sep = NULL;

      while (1)
  {
    gcov_position_t position = gcov_position ();
    const char *source = NULL;
    unsigned lineno = gcov_read_unsigned ();

    if (!lineno)
      {
        source = gcov_read_string ();
        if (!source)
    break;
        sep = NULL;
      }

    if (!sep)
      {
        printf ("\n");
        print_prefix (filename, 0, position);
        printf ("\tblock %u:", blockno);
        sep = "";
      }
    if (lineno)
      {
        printf ("%s%u", sep, lineno);
        sep = ", ";
      }
    else
      {
        printf ("%s`%s'", sep, source);
        sep = ":";
      }
  }
    }
}

static void
tag_counters (const char *filename ATTRIBUTE_UNUSED,
        unsigned tag ATTRIBUTE_UNUSED, unsigned length ATTRIBUTE_UNUSED)
{
  static const char *const counter_names[] = GCOV_COUNTER_NAMES;
  unsigned n_counts = GCOV_TAG_COUNTER_NUM (length);

  printf (" %s %u counts",
    counter_names[GCOV_COUNTER_FOR_TAG (tag)], n_counts);
  if (flag_dump_contents)
    {
      unsigned ix;

      for (ix = 0; ix != n_counts; ix++)
  {
    gcov_type count;

    if (!(ix & 7))
      {
        printf ("\n");
        print_prefix (filename, 0, gcov_position ());
        printf ("\t\t%u", ix);
      }

    count = gcov_read_counter ();
    printf (" ");
    printf (HOST_WIDEST_INT_PRINT_DEC, count);
  }
    }
}

static void
tag_summary (const char *filename ATTRIBUTE_UNUSED,
       unsigned tag ATTRIBUTE_UNUSED, unsigned length ATTRIBUTE_UNUSED)
{
  struct gcov_summary summary;
  unsigned ix;

  gcov_read_summary (&summary);
  printf (" checksum=0x%08x", summary.checksum);

  for (ix = 0; ix != GCOV_COUNTERS; ix++)
    {
      printf ("\n");
      print_prefix (filename, 0, 0);
      printf ("\t\tcounts=%u, runs=%u",
        summary.ctrs[ix].num, summary.ctrs[ix].runs);

      printf (", sum_all=" HOST_WIDEST_INT_PRINT_DEC,
        (HOST_WIDEST_INT)summary.ctrs[ix].sum_all);
      printf (", run_max=" HOST_WIDEST_INT_PRINT_DEC,
        (HOST_WIDEST_INT)summary.ctrs[ix].run_max);
      printf (", sum_max=" HOST_WIDEST_INT_PRINT_DEC,
        (HOST_WIDEST_INT)summary.ctrs[ix].sum_max);
    }
}

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