438 lines
11 KiB
C
438 lines
11 KiB
C
/* Dump a gcov file, for debugging use.
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Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
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Contributed by Nathan Sidwell <nathan@codesourcery.com>
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Gcov is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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Gcov is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Gcov; see the file COPYING. If not, write to
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the Free Software Foundation, 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA. */
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#include "config.h"
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#include "system.h"
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#include "coretypes.h"
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#include "tm.h"
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#include "version.h"
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#include <getopt.h>
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#define IN_GCOV (-1)
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#include "gcov-io.h"
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#include "gcov-io.c"
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static void dump_file (const char *);
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static void print_prefix (const char *, unsigned, gcov_position_t);
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static void print_usage (void);
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static void print_version (void);
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static void tag_function (const char *, unsigned, unsigned);
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static void tag_blocks (const char *, unsigned, unsigned);
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static void tag_arcs (const char *, unsigned, unsigned);
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static void tag_lines (const char *, unsigned, unsigned);
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static void tag_counters (const char *, unsigned, unsigned);
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static void tag_summary (const char *, unsigned, unsigned);
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extern int main (int, char **);
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typedef struct tag_format
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{
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unsigned tag;
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char const *name;
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void (*proc) (const char *, unsigned, unsigned);
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} tag_format_t;
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static int flag_dump_contents = 0;
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static int flag_dump_positions = 0;
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static const struct option options[] =
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{
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{ "help", no_argument, NULL, 'h' },
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{ "version", no_argument, NULL, 'v' },
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{ "long", no_argument, NULL, 'l' },
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{ "positions", no_argument, NULL, 'o' },
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{ 0, 0, 0, 0 }
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};
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static const tag_format_t tag_table[] =
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{
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{0, "NOP", NULL},
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{0, "UNKNOWN", NULL},
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{0, "COUNTERS", tag_counters},
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{GCOV_TAG_FUNCTION, "FUNCTION", tag_function},
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{GCOV_TAG_BLOCKS, "BLOCKS", tag_blocks},
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{GCOV_TAG_ARCS, "ARCS", tag_arcs},
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{GCOV_TAG_LINES, "LINES", tag_lines},
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{GCOV_TAG_OBJECT_SUMMARY, "OBJECT_SUMMARY", tag_summary},
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{GCOV_TAG_PROGRAM_SUMMARY, "PROGRAM_SUMMARY", tag_summary},
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{0, NULL, NULL}
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};
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int
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main (int argc ATTRIBUTE_UNUSED, char **argv)
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{
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int opt;
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/* Unlock the stdio streams. */
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unlock_std_streams ();
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while ((opt = getopt_long (argc, argv, "hlpv", options, NULL)) != -1)
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{
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switch (opt)
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{
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case 'h':
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print_usage ();
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break;
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case 'v':
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print_version ();
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break;
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case 'l':
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flag_dump_contents = 1;
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break;
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case 'p':
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flag_dump_positions = 1;
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break;
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default:
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fprintf (stderr, "unknown flag `%c'\n", opt);
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}
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}
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while (argv[optind])
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dump_file (argv[optind++]);
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return 0;
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}
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static void
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print_usage (void)
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{
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printf ("Usage: gcov-dump [OPTION] ... gcovfiles\n");
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printf ("Print coverage file contents\n");
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printf (" -h, --help Print this help\n");
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printf (" -v, --version Print version number\n");
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printf (" -l, --long Dump record contents too\n");
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printf (" -p, --positions Dump record positions\n");
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}
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static void
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print_version (void)
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{
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printf ("gcov-dump (GCC) %s\n", version_string);
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printf ("Copyright (C) 2006 Free Software Foundation, Inc.\n");
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printf ("This is free software; see the source for copying conditions.\n"
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"There is NO warranty; not even for MERCHANTABILITY or \n"
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"FITNESS FOR A PARTICULAR PURPOSE.\n\n");
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}
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static void
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print_prefix (const char *filename, unsigned depth, gcov_position_t position)
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{
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static const char prefix[] = " ";
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printf ("%s:", filename);
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if (flag_dump_positions)
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printf ("%lu:", (unsigned long) position);
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printf ("%.*s", (int) depth, prefix);
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}
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static void
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dump_file (const char *filename)
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{
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unsigned tags[4];
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unsigned depth = 0;
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if (!gcov_open (filename, 1))
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{
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fprintf (stderr, "%s:cannot open\n", filename);
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return;
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}
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/* magic */
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{
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unsigned magic = gcov_read_unsigned ();
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unsigned version;
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const char *type = NULL;
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int endianness = 0;
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char m[4], v[4];
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if ((endianness = gcov_magic (magic, GCOV_DATA_MAGIC)))
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type = "data";
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else if ((endianness = gcov_magic (magic, GCOV_NOTE_MAGIC)))
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type = "note";
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else
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{
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printf ("%s:not a gcov file\n", filename);
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gcov_close ();
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return;
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}
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version = gcov_read_unsigned ();
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GCOV_UNSIGNED2STRING (v, version);
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GCOV_UNSIGNED2STRING (m, magic);
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printf ("%s:%s:magic `%.4s':version `%.4s'%s\n", filename, type,
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m, v, endianness < 0 ? " (swapped endianness)" : "");
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if (version != GCOV_VERSION)
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{
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char e[4];
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GCOV_UNSIGNED2STRING (e, GCOV_VERSION);
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printf ("%s:warning:current version is `%.4s'\n", filename, e);
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}
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}
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/* stamp */
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{
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unsigned stamp = gcov_read_unsigned ();
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printf ("%s:stamp %lu\n", filename, (unsigned long)stamp);
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}
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while (1)
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{
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gcov_position_t base, position = gcov_position ();
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unsigned tag, length;
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tag_format_t const *format;
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unsigned tag_depth;
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int error;
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unsigned mask;
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tag = gcov_read_unsigned ();
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if (!tag)
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break;
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length = gcov_read_unsigned ();
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base = gcov_position ();
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mask = GCOV_TAG_MASK (tag) >> 1;
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for (tag_depth = 4; mask; mask >>= 8)
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{
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if ((mask & 0xff) != 0xff)
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{
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printf ("%s:tag `%08x' is invalid\n", filename, tag);
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break;
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}
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tag_depth--;
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}
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for (format = tag_table; format->name; format++)
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if (format->tag == tag)
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goto found;
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format = &tag_table[GCOV_TAG_IS_COUNTER (tag) ? 2 : 1];
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found:;
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if (tag)
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{
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if (depth && depth < tag_depth)
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{
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if (!GCOV_TAG_IS_SUBTAG (tags[depth - 1], tag))
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printf ("%s:tag `%08x' is incorrectly nested\n",
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filename, tag);
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}
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depth = tag_depth;
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tags[depth - 1] = tag;
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}
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print_prefix (filename, tag_depth, position);
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printf ("%08x:%4u:%s", tag, length, format->name);
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if (format->proc)
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(*format->proc) (filename, tag, length);
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printf ("\n");
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if (flag_dump_contents && format->proc)
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{
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unsigned long actual_length = gcov_position () - base;
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if (actual_length > length)
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printf ("%s:record size mismatch %lu bytes overread\n",
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filename, actual_length - length);
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else if (length > actual_length)
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printf ("%s:record size mismatch %lu bytes unread\n",
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filename, length - actual_length);
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}
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gcov_sync (base, length);
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if ((error = gcov_is_error ()))
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{
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printf (error < 0 ? "%s:counter overflow at %lu\n" :
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"%s:read error at %lu\n", filename,
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(long unsigned) gcov_position ());
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break;
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}
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}
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gcov_close ();
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}
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static void
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tag_function (const char *filename ATTRIBUTE_UNUSED,
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unsigned tag ATTRIBUTE_UNUSED, unsigned length ATTRIBUTE_UNUSED)
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{
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unsigned long pos = gcov_position ();
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printf (" ident=%u", gcov_read_unsigned ());
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printf (", checksum=0x%08x", gcov_read_unsigned ());
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if (gcov_position () - pos < length)
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{
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const char *name;
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name = gcov_read_string ();
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printf (", `%s'", name ? name : "NULL");
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name = gcov_read_string ();
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printf (" %s", name ? name : "NULL");
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printf (":%u", gcov_read_unsigned ());
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}
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}
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static void
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tag_blocks (const char *filename ATTRIBUTE_UNUSED,
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unsigned tag ATTRIBUTE_UNUSED, unsigned length ATTRIBUTE_UNUSED)
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{
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unsigned n_blocks = GCOV_TAG_BLOCKS_NUM (length);
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printf (" %u blocks", n_blocks);
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if (flag_dump_contents)
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{
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unsigned ix;
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for (ix = 0; ix != n_blocks; ix++)
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{
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if (!(ix & 7))
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{
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printf ("\n");
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print_prefix (filename, 0, gcov_position ());
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printf ("\t\t%u", ix);
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}
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printf (" %04x", gcov_read_unsigned ());
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}
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}
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}
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static void
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tag_arcs (const char *filename ATTRIBUTE_UNUSED,
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unsigned tag ATTRIBUTE_UNUSED, unsigned length ATTRIBUTE_UNUSED)
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{
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unsigned n_arcs = GCOV_TAG_ARCS_NUM (length);
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printf (" %u arcs", n_arcs);
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if (flag_dump_contents)
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{
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unsigned ix;
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unsigned blockno = gcov_read_unsigned ();
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for (ix = 0; ix != n_arcs; ix++)
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{
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unsigned dst, flags;
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if (!(ix & 3))
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{
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printf ("\n");
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print_prefix (filename, 0, gcov_position ());
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printf ("\tblock %u:", blockno);
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}
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dst = gcov_read_unsigned ();
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flags = gcov_read_unsigned ();
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printf (" %u:%04x", dst, flags);
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}
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}
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}
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static void
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tag_lines (const char *filename ATTRIBUTE_UNUSED,
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unsigned tag ATTRIBUTE_UNUSED, unsigned length ATTRIBUTE_UNUSED)
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{
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if (flag_dump_contents)
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{
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unsigned blockno = gcov_read_unsigned ();
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char const *sep = NULL;
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while (1)
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{
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gcov_position_t position = gcov_position ();
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const char *source = NULL;
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unsigned lineno = gcov_read_unsigned ();
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if (!lineno)
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{
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source = gcov_read_string ();
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if (!source)
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break;
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sep = NULL;
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}
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if (!sep)
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{
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printf ("\n");
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print_prefix (filename, 0, position);
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printf ("\tblock %u:", blockno);
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sep = "";
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}
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if (lineno)
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{
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printf ("%s%u", sep, lineno);
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sep = ", ";
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}
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else
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{
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printf ("%s`%s'", sep, source);
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sep = ":";
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}
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}
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}
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}
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static void
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tag_counters (const char *filename ATTRIBUTE_UNUSED,
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unsigned tag ATTRIBUTE_UNUSED, unsigned length ATTRIBUTE_UNUSED)
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{
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static const char *const counter_names[] = GCOV_COUNTER_NAMES;
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unsigned n_counts = GCOV_TAG_COUNTER_NUM (length);
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printf (" %s %u counts",
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counter_names[GCOV_COUNTER_FOR_TAG (tag)], n_counts);
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if (flag_dump_contents)
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{
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unsigned ix;
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for (ix = 0; ix != n_counts; ix++)
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{
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gcov_type count;
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if (!(ix & 7))
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{
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printf ("\n");
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print_prefix (filename, 0, gcov_position ());
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printf ("\t\t%u", ix);
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}
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count = gcov_read_counter ();
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printf (" ");
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printf (HOST_WIDEST_INT_PRINT_DEC, count);
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}
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}
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}
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static void
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tag_summary (const char *filename ATTRIBUTE_UNUSED,
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unsigned tag ATTRIBUTE_UNUSED, unsigned length ATTRIBUTE_UNUSED)
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{
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struct gcov_summary summary;
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unsigned ix;
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gcov_read_summary (&summary);
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printf (" checksum=0x%08x", summary.checksum);
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for (ix = 0; ix != GCOV_COUNTERS; ix++)
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{
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printf ("\n");
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print_prefix (filename, 0, 0);
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printf ("\t\tcounts=%u, runs=%u",
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summary.ctrs[ix].num, summary.ctrs[ix].runs);
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printf (", sum_all=" HOST_WIDEST_INT_PRINT_DEC,
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(HOST_WIDEST_INT)summary.ctrs[ix].sum_all);
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printf (", run_max=" HOST_WIDEST_INT_PRINT_DEC,
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(HOST_WIDEST_INT)summary.ctrs[ix].run_max);
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printf (", sum_max=" HOST_WIDEST_INT_PRINT_DEC,
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(HOST_WIDEST_INT)summary.ctrs[ix].sum_max);
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}
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}
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