| /* Dump a gcov file, for debugging use. |
| Copyright (C) 2002-2021 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 3, 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 COPYING3. If not see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include "config.h" |
| #include "system.h" |
| #include "coretypes.h" |
| #include "tm.h" |
| #include "version.h" |
| #include "intl.h" |
| #include "diagnostic.h" |
| #include <getopt.h> |
| #define IN_GCOV (-1) |
| #include "gcov-io.h" |
| #include "gcov-io.c" |
| |
| static void dump_gcov_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, int, unsigned); |
| static void tag_blocks (const char *, unsigned, int, unsigned); |
| static void tag_arcs (const char *, unsigned, int, unsigned); |
| static void tag_lines (const char *, unsigned, int, unsigned); |
| static void tag_counters (const char *, unsigned, int, unsigned); |
| static void tag_summary (const char *, unsigned, int, unsigned); |
| extern int main (int, char **); |
| |
| typedef struct tag_format |
| { |
| unsigned tag; |
| char const *name; |
| void (*proc) (const char *, unsigned, int, unsigned); |
| } tag_format_t; |
| |
| static int flag_dump_contents = 0; |
| static int flag_dump_positions = 0; |
| static int flag_dump_raw = 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 } |
| }; |
| |
| #define VALUE_PADDING_PREFIX " " |
| #define VALUE_PREFIX "%2d: " |
| |
| 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}, |
| {0, NULL, NULL} |
| }; |
| |
| int |
| main (int argc ATTRIBUTE_UNUSED, char **argv) |
| { |
| int opt; |
| const char *p; |
| |
| p = argv[0] + strlen (argv[0]); |
| while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1])) |
| --p; |
| progname = p; |
| |
| xmalloc_set_program_name (progname); |
| |
| /* Unlock the stdio streams. */ |
| unlock_std_streams (); |
| |
| gcc_init_libintl (); |
| |
| diagnostic_initialize (global_dc, 0); |
| |
| while ((opt = getopt_long (argc, argv, "hlprvw", 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; |
| case 'r': |
| flag_dump_raw = 1; |
| break; |
| default: |
| fprintf (stderr, "unknown flag `%c'\n", opt); |
| } |
| } |
| |
| while (argv[optind]) |
| dump_gcov_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 (" -l, --long Dump record contents too\n"); |
| printf (" -p, --positions Dump record positions\n"); |
| printf (" -r, --raw Print content records in raw format\n"); |
| printf (" -v, --version Print version number\n"); |
| printf ("\nFor bug reporting instructions, please see:\n%s.\n", |
| bug_report_url); |
| } |
| |
| static void |
| print_version (void) |
| { |
| printf ("gcov-dump %s%s\n", pkgversion_string, version_string); |
| printf ("Copyright (C) 2021 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 (const char *filename, unsigned depth, gcov_position_t position) |
| { |
| static const char prefix[] = " "; |
| |
| printf ("%s:", filename); |
| if (flag_dump_positions) |
| printf ("%5lu:", (unsigned long) position); |
| printf ("%.*s", (int) 2 * depth, prefix); |
| } |
| |
| static void |
| dump_gcov_file (const char *filename) |
| { |
| unsigned tags[4]; |
| unsigned depth = 0; |
| bool is_data_type; |
| |
| if (!gcov_open (filename, 1)) |
| { |
| fprintf (stderr, "%s:cannot open\n", filename); |
| return; |
| } |
| |
| /* magic */ |
| { |
| unsigned magic = gcov_read_unsigned (); |
| unsigned version; |
| int endianness = 0; |
| char m[4], v[4]; |
| |
| if ((endianness = gcov_magic (magic, GCOV_DATA_MAGIC))) |
| is_data_type = true; |
| else if ((endianness = gcov_magic (magic, GCOV_NOTE_MAGIC))) |
| is_data_type = false; |
| 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, |
| is_data_type ? "data" : "note", |
| 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); |
| |
| /* Checksum */ |
| unsigned checksum = gcov_read_unsigned (); |
| printf ("%s:checksum %lu\n", filename, (unsigned long)checksum); |
| |
| if (!is_data_type) |
| { |
| printf ("%s:cwd: %s\n", filename, gcov_read_string ()); |
| |
| /* Support for unexecuted basic blocks. */ |
| unsigned support_unexecuted_blocks = gcov_read_unsigned (); |
| if (!support_unexecuted_blocks) |
| printf ("%s: has_unexecuted_block is not supported\n", filename); |
| } |
| |
| while (1) |
| { |
| gcov_position_t base, position = gcov_position (); |
| int read_length; |
| unsigned tag, length; |
| tag_format_t const *format; |
| unsigned tag_depth; |
| int error; |
| unsigned mask; |
| |
| tag = gcov_read_unsigned (); |
| if (!tag) |
| break; |
| read_length = (int)gcov_read_unsigned (); |
| length = read_length > 0 ? read_length : 0; |
| 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, abs (read_length), format->name); |
| if (format->proc) |
| (*format->proc) (filename, tag, read_length, depth); |
| |
| 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, int length, |
| unsigned depth ATTRIBUTE_UNUSED) |
| { |
| gcov_position_t pos = gcov_position (); |
| |
| if (!length) |
| printf (" placeholder"); |
| else |
| { |
| printf (" ident=%u", gcov_read_unsigned ()); |
| printf (", lineno_checksum=0x%08x", gcov_read_unsigned ()); |
| printf (", cfg_checksum=0x%08x", gcov_read_unsigned ()); |
| |
| if (gcov_position () - pos < (gcov_position_t) length) |
| { |
| const char *name; |
| |
| name = gcov_read_string (); |
| printf (", `%s'", name ? name : "NULL"); |
| unsigned artificial = gcov_read_unsigned (); |
| name = gcov_read_string (); |
| printf (" %s", name ? name : "NULL"); |
| unsigned line_start = gcov_read_unsigned (); |
| unsigned column_start = gcov_read_unsigned (); |
| unsigned line_end = gcov_read_unsigned (); |
| unsigned column_end = gcov_read_unsigned (); |
| printf (":%u:%u-%u:%u", line_start, column_start, |
| line_end, column_end); |
| if (artificial) |
| printf (", artificial"); |
| } |
| } |
| } |
| |
| static void |
| tag_blocks (const char *filename ATTRIBUTE_UNUSED, |
| unsigned tag ATTRIBUTE_UNUSED, int length ATTRIBUTE_UNUSED, |
| unsigned depth ATTRIBUTE_UNUSED) |
| { |
| printf (" %u blocks", gcov_read_unsigned ()); |
| } |
| |
| static void |
| tag_arcs (const char *filename ATTRIBUTE_UNUSED, |
| unsigned tag ATTRIBUTE_UNUSED, int length ATTRIBUTE_UNUSED, |
| unsigned depth) |
| { |
| 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, depth, gcov_position ()); |
| printf (VALUE_PADDING_PREFIX "block %u:", blockno); |
| } |
| dst = gcov_read_unsigned (); |
| flags = gcov_read_unsigned (); |
| printf (" %u:%04x", dst, flags); |
| if (flags) |
| { |
| char c = '('; |
| |
| if (flags & GCOV_ARC_ON_TREE) |
| printf ("%ctree", c), c = ','; |
| if (flags & GCOV_ARC_FAKE) |
| printf ("%cfake", c), c = ','; |
| if (flags & GCOV_ARC_FALLTHROUGH) |
| printf ("%cfall", c), c = ','; |
| printf (")"); |
| } |
| } |
| } |
| } |
| |
| static void |
| tag_lines (const char *filename ATTRIBUTE_UNUSED, |
| unsigned tag ATTRIBUTE_UNUSED, int length ATTRIBUTE_UNUSED, |
| unsigned depth) |
| { |
| 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, depth, position); |
| printf (VALUE_PADDING_PREFIX "block %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, int length ATTRIBUTE_UNUSED, |
| unsigned depth) |
| { |
| #define DEF_GCOV_COUNTER(COUNTER, NAME, MERGE_FN) NAME, |
| static const char *const counter_names[] = { |
| #include "gcov-counter.def" |
| }; |
| #undef DEF_GCOV_COUNTER |
| int n_counts = GCOV_TAG_COUNTER_NUM (length); |
| bool has_zeros = n_counts < 0; |
| n_counts = abs (n_counts); |
| |
| printf (" %s %u counts%s", |
| counter_names[GCOV_COUNTER_FOR_TAG (tag)], n_counts, |
| has_zeros ? " (all zero)" : ""); |
| if (flag_dump_contents) |
| { |
| for (int ix = 0; ix != n_counts; ix++) |
| { |
| gcov_type count; |
| |
| if (flag_dump_raw) |
| { |
| if (ix == 0) |
| printf (": "); |
| } |
| else if (!(ix & 7)) |
| { |
| printf ("\n"); |
| print_prefix (filename, depth, gcov_position ()); |
| printf (VALUE_PADDING_PREFIX VALUE_PREFIX, ix); |
| } |
| |
| count = has_zeros ? 0 : gcov_read_counter (); |
| printf ("%" PRId64 " ", count); |
| } |
| } |
| } |
| |
| static void |
| tag_summary (const char *filename ATTRIBUTE_UNUSED, |
| unsigned tag ATTRIBUTE_UNUSED, int length ATTRIBUTE_UNUSED, |
| unsigned depth ATTRIBUTE_UNUSED) |
| { |
| gcov_summary summary; |
| gcov_read_summary (&summary); |
| printf (" runs=%d, sum_max=%" PRId64, |
| summary.runs, summary.sum_max); |
| } |