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gcc/gcc/gcov-dump.c

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/* Dump a gcov file, for debugging use.
Copyright (C) 2002 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>
typedef HOST_WIDEST_INT gcov_type;
#include "gcov-io.h"
static void dump_file PARAMS ((const char *));
static void print_prefix PARAMS ((const char *, unsigned));
static void print_usage PARAMS ((void));
static void print_version PARAMS ((void));
static int tag_function PARAMS ((const char *, FILE *, unsigned, unsigned));
static int tag_blocks PARAMS ((const char *, FILE *, unsigned, unsigned));
static int tag_arcs PARAMS ((const char *, FILE *, unsigned, unsigned));
static int tag_lines PARAMS ((const char *, FILE *, unsigned, unsigned));
static int tag_arc_counts PARAMS ((const char *, FILE *, unsigned, unsigned));
static int tag_summary PARAMS ((const char *, FILE *, unsigned, unsigned));
extern int main PARAMS ((int, char **));
typedef struct tag_format
{
unsigned tag;
char const *name;
int (*proc) (const char *, FILE *, unsigned, unsigned);
} tag_format_t;
static int flag_dump_contents = 0;
static const struct option options[] =
{
{ "help", no_argument, NULL, 'h' },
{ "version", no_argument, NULL, 'v' },
{ "long", no_argument, NULL, 'l' },
};
static const tag_format_t tag_table[] =
{
{0, "NOP", NULL},
{0, "UNKNOWN", NULL},
{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_ARC_COUNTS, "ARC_COUNTS", tag_arc_counts},
{GCOV_TAG_OBJECT_SUMMARY, "OBJECT_SUMMARY", tag_summary},
{GCOV_TAG_PROGRAM_SUMMARY, "PROGRAM_SUMMARY", tag_summary},
{GCOV_TAG_PLACEHOLDER_SUMMARY, "PROGRAM_PLACEHOLDER", tag_summary},
{GCOV_TAG_INCORRECT_SUMMARY, "PROGRAM_INCORRECT", tag_summary},
{0, NULL, NULL}
};
int main (argc, argv)
int argc ATTRIBUTE_UNUSED;
char **argv;
{
int opt;
while ((opt = getopt_long (argc, argv, "hlv", options, NULL)) != -1)
{
switch (opt)
{
case 'h':
print_usage ();
break;
case 'v':
print_version ();
break;
case 'l':
flag_dump_contents = 1;
break;
default:
fprintf (stderr, "unknown flag `%c'\n", opt);
}
}
while (argv[optind])
dump_file (argv[optind++]);
return 0;
}
static void
print_usage ()
{
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");
}
static void
print_version ()
{
char v[4];
unsigned version = GCOV_VERSION;
unsigned ix;
for (ix = 4; ix--; version >>= 8)
v[ix] = version;
printf ("gcov %.4s (GCC %s)\n", v, version_string);
printf ("Copyright (C) 2002 Free Software Foundation, Inc.\n");
printf ("This is free software; see the source for copying conditions. There is NO\n\
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n");
}
static void
print_prefix (filename, depth)
const char *filename;
unsigned depth;
{
static const char prefix[] = " ";
printf ("%s:%.*s", filename, (int) depth, prefix);
}
static void
dump_file (filename)
const char *filename;
{
FILE *file = fopen (filename, "rb");
unsigned tags[4];
unsigned depth = 0;
unsigned magic, version;
unsigned tag, length;
if (!file)
{
fprintf (stderr, "%s:cannot open\n", filename);
return;
}
if (gcov_read_unsigned (file, &magic)
|| gcov_read_unsigned (file, &version))
{
read_error:;
printf ("%s:read error at %ld\n", filename, ftell (file));
fclose (file);
return;
}
/* magic */
{
const char *type = NULL;
char e[4], v[4], m[4];
unsigned expected = GCOV_VERSION;
unsigned ix;
int different = version != GCOV_VERSION;
if (magic == GCOV_DATA_MAGIC)
type = "data";
else if (magic == GCOV_GRAPH_MAGIC)
type = "graph";
else
{
printf ("%s:not a gcov file\n", filename);
fclose (file);
return;
}
for (ix = 4; ix--; expected >>= 8, version >>= 8, magic >>= 8)
{
e[ix] = expected;
v[ix] = version;
m[ix] = magic;
}
printf ("%s:%s:magic `%.4s':version `%.4s'\n", filename, type, m, v);
if (different)
printf ("%s:warning:current version is `%.4s'\n", filename, e);
}
while (!gcov_read_unsigned (file, &tag)
&& !gcov_read_unsigned (file, &length))
{
tag_format_t const *format;
unsigned tag_depth;
long base, end;
base = gcov_save_position (file);
if (!tag)
tag_depth = depth;
else
{
unsigned 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[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);
printf ("%08x:%4u:%s", tag, length, format->name);
if (format->proc)
if ((*format->proc) (filename, file, tag, length))
goto read_error;
printf ("\n");
end = gcov_save_position (file);
gcov_resync (file, base, length);
if (format->proc && end != base + (long)length)
{
if (end > base + (long)length)
printf ("%s:record size mismatch %lu bytes overread\n",
filename, (end - base) - length);
else
printf ("%s:record size mismatch %lu bytes unread\n",
filename, length - (end - base));
}
}
if (!feof (file))
goto read_error;
fclose (file);
}
static int
tag_function (filename, file, tag, length)
const char *filename ATTRIBUTE_UNUSED;
FILE *file ATTRIBUTE_UNUSED;
unsigned tag ATTRIBUTE_UNUSED;
unsigned length ATTRIBUTE_UNUSED;
{
char *name = NULL;
unsigned checksum;
if (gcov_read_string (file, &name, NULL)
|| gcov_read_unsigned (file, &checksum))
return 1;
printf (" `%s' checksum=0x%08x", name, checksum);
free (name);
return 0;
}
static int
tag_blocks (filename, file, tag, length)
const char *filename ATTRIBUTE_UNUSED;
FILE *file ATTRIBUTE_UNUSED;
unsigned tag ATTRIBUTE_UNUSED;
unsigned length ATTRIBUTE_UNUSED;
{
unsigned n_blocks = length / 4;
printf (" %u blocks", n_blocks);
if (flag_dump_contents)
{
unsigned ix;
for (ix = 0; ix != n_blocks; ix++)
{
unsigned flags;
if (gcov_read_unsigned (file, &flags))
return 1;
if (!(ix & 7))
printf ("\n%s:\t\t%u", filename, ix);
printf (" %04x", flags);
}
}
else
gcov_skip (file, n_blocks * 4);
return 0;
}
static int
tag_arcs (filename, file, tag, length)
const char *filename ATTRIBUTE_UNUSED;
FILE *file ATTRIBUTE_UNUSED;
unsigned tag ATTRIBUTE_UNUSED;
unsigned length ATTRIBUTE_UNUSED;
{
unsigned n_arcs = (length - 4) / 8;
printf (" %u arcs", n_arcs);
if (flag_dump_contents)
{
unsigned ix;
unsigned blockno;
if (gcov_read_unsigned (file, &blockno))
return 1;
for (ix = 0; ix != n_arcs; ix++)
{
unsigned dst, flags;
if (gcov_read_unsigned (file, &dst)
|| gcov_read_unsigned (file, &flags))
return 1;
if (!(ix & 3))
printf ("\n%s:\t\t%u:", filename, blockno);
printf (" %u:%04x", dst, flags);
}
}
else
gcov_skip (file, 4 + n_arcs * 8);
return 0;
}
static int
tag_lines (filename, file, tag, length)
const char *filename ATTRIBUTE_UNUSED;
FILE *file ATTRIBUTE_UNUSED;
unsigned tag ATTRIBUTE_UNUSED;
unsigned length ATTRIBUTE_UNUSED;
{
if (flag_dump_contents)
{
char *source = NULL;
unsigned blockno;
char const *sep = NULL;
if (gcov_read_unsigned (file, &blockno))
return 1;
while (1)
{
unsigned lineno;
if (gcov_read_unsigned (file, &lineno))
{
free (source);
return 1;
}
if (!lineno)
{
if (gcov_read_string (file, &source, NULL))
return 1;
if (!source)
break;
sep = NULL;
}
if (!sep)
{
printf ("\n%s:\t\t%u:", filename, blockno);
sep = "";
}
if (lineno)
{
printf ("%s%u", sep, lineno);
sep = ", ";
}
else
{
printf ("%s`%s'", sep, source);
sep = ":";
}
}
}
else
gcov_skip (file, length);
return 0;
}
static int
tag_arc_counts (filename, file, tag, length)
const char *filename ATTRIBUTE_UNUSED;
FILE *file ATTRIBUTE_UNUSED;
unsigned tag ATTRIBUTE_UNUSED;
unsigned length ATTRIBUTE_UNUSED;
{
unsigned n_counts = length / 8;
printf (" %u counts", n_counts);
if (flag_dump_contents)
{
unsigned ix;
for (ix = 0; ix != n_counts; ix++)
{
gcov_type count;
if (gcov_read_counter (file, &count))
return 1;
if (!(ix & 7))
printf ("\n%s:\t\t%u", filename, ix);
printf (" ");
printf (HOST_WIDEST_INT_PRINT_DEC, count);
}
}
else
gcov_skip (file, n_counts * 8);
return 0;
}
static int
tag_summary (filename, file, tag, length)
const char *filename ATTRIBUTE_UNUSED;
FILE *file ATTRIBUTE_UNUSED;
unsigned tag ATTRIBUTE_UNUSED;
unsigned length ATTRIBUTE_UNUSED;
{
struct gcov_summary summary;
if (gcov_read_summary (file, &summary))
return 1;
printf (" checksum=0x%08x", summary.checksum);
printf ("\n%s:\t\truns=%u, arcs=%u", filename,
summary.runs, summary.arcs);
printf ("\n%s:\t\tarc_sum=", filename);
printf (HOST_WIDEST_INT_PRINT_DEC,
(HOST_WIDEST_INT)summary.arc_sum);
printf (", arc_max_one=");
printf (HOST_WIDEST_INT_PRINT_DEC,
(HOST_WIDEST_INT)summary.arc_max_one);
printf ("\n%s:\t\tmax_sum=", filename);
printf (HOST_WIDEST_INT_PRINT_DEC,
(HOST_WIDEST_INT)summary.arc_max_sum);
printf (", sum_max=");
printf (HOST_WIDEST_INT_PRINT_DEC,
(HOST_WIDEST_INT)summary.arc_sum_max);
return 0;
}
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