/* Gcov.c: prepend line execution counts and branch probabilities to a
source file.
Copyright (C) 1990, 1991, 1992, 1993, 1994, 1996, 1997, 1998,
- 1999, 2000, 2001 Free Software Foundation, Inc.
+ 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
Contributed by James E. Wilson of Cygnus Support.
Mangled by Bob Manson of Cygnus Support.
#include "config.h"
#include "system.h"
#include "intl.h"
+#include "version.h"
#undef abort
+#include <getopt.h>
+
typedef HOST_WIDEST_INT gcov_type;
#include "gcov-io.h"
/* The functions in this file for creating and solution program flow graphs
are very similar to functions in the gcc source file profile.c. */
-static const char gcov_version_string[] = "GNU gcov version 1.5\n";
-
/* This is the size of the buffer used to read in source file lines. */
#define STRING_SIZE 200
static void read_files PARAMS ((void));
static void scan_for_source_files PARAMS ((void));
static void output_data PARAMS ((void));
-static void print_usage PARAMS ((void)) ATTRIBUTE_NORETURN;
+static void print_usage PARAMS ((int)) ATTRIBUTE_NORETURN;
+static void print_version PARAMS ((void)) ATTRIBUTE_NORETURN;
static void init_arc PARAMS ((struct adj_list *, int, int, struct bb_info *));
static struct adj_list *reverse_arcs PARAMS ((struct adj_list *));
+static gcov_type *read_profile PARAMS ((char *, long, int));
static void create_program_flow_graph PARAMS ((struct bb_info_list *));
static void solve_program_flow_graph PARAMS ((struct bb_info_list *));
static void calculate_branch_probs PARAMS ((struct bb_info_list *, int,
int argc;
char **argv;
{
-/* LC_CTYPE determines the character set used by the terminal so it has be set
- to output messages correctly. */
-
-#ifdef HAVE_LC_MESSAGES
- setlocale (LC_CTYPE, "");
- setlocale (LC_MESSAGES, "");
-#else
- setlocale (LC_ALL, "");
-#endif
-
- (void) bindtextdomain (PACKAGE, localedir);
- (void) textdomain (PACKAGE);
+ gcc_init_libintl ();
process_args (argc, argv);
exit (FATAL_EXIT_CODE);
}
\f
-/* Print a usage message and exit. */
+/* Print a usage message and exit. If ERROR_P is nonzero, this is an error,
+ otherwise the output of --help. */
static void
-print_usage ()
+print_usage (error_p)
+ int error_p;
{
- fnotice (stderr, "gcov [-b] [-v] [-n] [-l] [-f] [-o OBJDIR] file\n");
- exit (FATAL_EXIT_CODE);
+ FILE *file = error_p ? stderr : stdout;
+ int status = error_p ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE;
+ fnotice (file, "Usage: gcov [OPTION]... SOURCEFILE\n\n");
+ fnotice (file, "Print code coverage information.\n\n");
+ fnotice (file, " -h, --help Print this help, then exit\n");
+ fnotice (file, " -v, --version Print version number, then exit\n");
+ fnotice (file, " -b, --branch-probabilities Include branch probabilities in output\n");
+ fnotice (file, " -c, --branch-counts Given counts of branches taken\n\
+ rather than percentages\n");
+ fnotice (file, " -n, --no-output Do not create an output file\n");
+ fnotice (file, " -l, --long-file-names Use long output file names for included\n\
+ source files\n");
+ fnotice (file, " -f, --function-summaries Output summaries for each function\n");
+ fnotice (file, " -o, --object-directory OBJDIR Search for object files in OBJDIR\n");
+ fnotice (file, "\nFor bug reporting instructions, please see:\n%s.\n",
+ GCCBUGURL);
+ exit (status);
+}
+
+/* Print version information and exit. */
+
+static void
+print_version ()
+{
+ fnotice (stdout, "gcov (GCC) %s\n", version_string);
+ fnotice (stdout, "Copyright (C) 2001 Free Software Foundation, Inc.\n");
+ fnotice (stdout,
+ "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");
+ exit (SUCCESS_EXIT_CODE);
}
+static const struct option options[] =
+{
+ { "help", no_argument, NULL, 'h' },
+ { "version", no_argument, NULL, 'v' },
+ { "branch-probabilities", no_argument, NULL, 'b' },
+ { "branch-counts", no_argument, NULL, 'c' },
+ { "no-output", no_argument, NULL, 'n' },
+ { "long-file-names", no_argument, NULL, 'l' },
+ { "function-summaries", no_argument, NULL, 'f' },
+ { "object-directory", required_argument, NULL, 'o' }
+};
+
/* Parse the command line. */
static void
int argc;
char **argv;
{
- int i;
+ int opt;
- for (i = 1; i < argc; i++)
+ while ((opt = getopt_long (argc, argv, "hvbclnfo:", options, NULL)) != -1)
{
- if (argv[i][0] == '-')
+ switch (opt)
{
- if (argv[i][1] == 'b')
- output_branch_probs = 1;
- else if (argv[i][1] == 'c')
- output_branch_counts = 1;
- else if (argv[i][1] == 'v')
- fputs (gcov_version_string, stderr);
- else if (argv[i][1] == 'n')
- output_gcov_file = 0;
- else if (argv[i][1] == 'l')
- output_long_names = 1;
- else if (argv[i][1] == 'f')
- output_function_summary = 1;
- else if (argv[i][1] == 'o' && argv[i][2] == '\0')
- object_directory = argv[++i];
- else
- print_usage ();
+ case 'h':
+ print_usage (false);
+ /* print_usage will exit. */
+ case 'v':
+ print_version ();
+ /* print_version will exit. */
+ case 'b':
+ output_branch_probs = 1;
+ break;
+ case 'c':
+ output_branch_counts = 1;
+ break;
+ case 'n':
+ output_gcov_file = 0;
+ break;
+ case 'l':
+ output_long_names = 1;
+ break;
+ case 'f':
+ output_function_summary = 1;
+ break;
+ case 'o':
+ object_directory = optarg;
+ break;
+ default:
+ print_usage (true);
+ /* print_usage will exit. */
}
- else if (! input_file_name)
- input_file_name = argv[i];
- else
- print_usage ();
}
- if (! input_file_name)
- print_usage ();
+ if (optind != argc - 1)
+ print_usage (true);
+
+ input_file_name = argv[optind];
}
return prev;
}
+/* Reads profiles from the .da file and compute a hybrid profile. */
+
+static gcov_type *
+read_profile (function_name, cfg_checksum, instr_arcs)
+ char *function_name;
+ long cfg_checksum;
+ int instr_arcs;
+{
+ int i;
+ int okay = 1;
+ gcov_type *profile;
+ char *function_name_buffer;
+ int function_name_buffer_len;
+
+ profile = xmalloc (sizeof (gcov_type) * instr_arcs);
+ rewind (da_file);
+ function_name_buffer_len = strlen (function_name) + 1;
+ function_name_buffer = xmalloc (function_name_buffer_len + 1);
+
+ for (i = 0; i < instr_arcs; i++)
+ profile[i] = 0;
+
+ if (!da_file)
+ return profile;
+
+ while (1)
+ {
+ long magic, extra_bytes;
+ long func_count;
+ int i;
+
+ if (__read_long (&magic, da_file, 4) != 0)
+ break;
+
+ if (magic != -123)
+ {
+ okay = 0;
+ break;
+ }
+
+ if (__read_long (&func_count, da_file, 4) != 0)
+ {
+ okay = 0;
+ break;
+ }
+
+ if (__read_long (&extra_bytes, da_file, 4) != 0)
+ {
+ okay = 0;
+ break;
+ }
+
+ /* skip extra data emited by __bb_exit_func. */
+ fseek (da_file, extra_bytes, SEEK_CUR);
+
+ for (i = 0; i < func_count; i++)
+ {
+ long arc_count;
+ long chksum;
+ int j;
+
+ if (__read_gcov_string
+ (function_name_buffer, function_name_buffer_len, da_file,
+ -1) != 0)
+ {
+ okay = 0;
+ break;
+ }
+
+ if (__read_long (&chksum, da_file, 4) != 0)
+ {
+ okay = 0;
+ break;
+ }
+
+ if (__read_long (&arc_count, da_file, 4) != 0)
+ {
+ okay = 0;
+ break;
+ }
+
+ if (strcmp (function_name_buffer, function_name) != 0
+ || arc_count != instr_arcs || chksum != cfg_checksum)
+ {
+ /* skip */
+ if (fseek (da_file, arc_count * 8, SEEK_CUR) < 0)
+ {
+ okay = 0;
+ break;
+ }
+ }
+ else
+ {
+ gcov_type tmp;
+
+ for (j = 0; j < arc_count; j++)
+ if (__read_gcov_type (&tmp, da_file, 8) != 0)
+ {
+ okay = 0;
+ break;
+ }
+ else
+ {
+ profile[j] += tmp;
+ }
+ }
+ }
+
+ if (!okay)
+ break;
+
+ }
+
+ free (function_name_buffer);
+
+ if (!okay)
+ {
+ fprintf (stderr, ".da file corrupted!\n");
+ free (profile);
+ abort ();
+ }
+
+ return profile;
+}
/* Construct the program flow graph from the .bbg file, and read in the data
in the .da file. */
int i;
struct adj_list *arcptr;
struct bb_info *bb_graph;
+ long cfg_checksum;
+ long instr_arcs = 0;
+ gcov_type *profile;
+ int profile_pos = 0;
+ char *function_name;
+ long function_name_len, tmp;
+
+ /* Read function name. */
+ __read_long (&tmp, bbg_file, 4); /* ignore -1. */
+ __read_long (&function_name_len, bbg_file, 4);
+ function_name = xmalloc (function_name_len + 1);
+ fread (function_name, 1, function_name_len + 1, bbg_file);
+
+ /* Skip padding. */
+ tmp = (function_name_len + 1) % 4;
+
+ if (tmp)
+ fseek (bbg_file, 4 - tmp, SEEK_CUR);
+
+ __read_long (&tmp, bbg_file, 4); /* ignore -1. */
+
+ /* Read the cfg checksum. */
+ __read_long (&cfg_checksum, bbg_file, 4);
/* Read the number of blocks. */
__read_long (&num_blocks, bbg_file, 4);
init_arc (arcptr, src, dest, bb_graph);
__read_long (&flag_bits, bbg_file, 4);
- arcptr->on_tree = flag_bits & 0x1;
+ if (flag_bits & 0x1)
+ arcptr->on_tree++;
+ else
+ instr_arcs++;
arcptr->fake = !! (flag_bits & 0x2);
arcptr->fall_through = !! (flag_bits & 0x4);
}
if (bb_graph[i].succ)
bb_graph[i].succ = reverse_arcs (bb_graph[i].succ);
+ /* Read profile from the .da file. */
+
+ profile = read_profile (function_name, cfg_checksum, instr_arcs);
+
/* For each arc not on the spanning tree, set its execution count from
the .da file. */
for (arcptr = bb_graph[i].succ; arcptr; arcptr = arcptr->succ_next)
if (! arcptr->on_tree)
{
- gcov_type tmp_count = 0;
- if (da_file && __read_gcov_type (&tmp_count, da_file, 8))
- abort();
-
- arcptr->arc_count = tmp_count;
+ arcptr->arc_count = profile[profile_pos++];
arcptr->count_valid = 1;
bb_graph[i].succ_count--;
bb_graph[arcptr->target].pred_count--;
}
+ free (profile);
+ free (function_name);
}
static void
struct stat buf;
struct bb_info_list *list_end = 0;
struct bb_info_list *b_ptr;
- long total;
-
- /* Read and ignore the first word of the .da file, which is the count of
- how many numbers follow. */
- if (da_file && __read_long (&total, da_file, 8))
- abort();
while (! feof (bbg_file))
{
ungetc (getc (bbg_file), bbg_file);
}
- /* Check to make sure the .da file data is valid. */
-
- if (da_file)
- {
- if (feof (da_file))
- fnotice (stderr, ".da file contents exhausted too early\n");
- /* Should be at end of file now. */
- if (__read_long (&total, da_file, 8) == 0)
- fnotice (stderr, ".da file contents not exhausted\n");
- }
-
/* Calculate all of the basic block execution counts and branch
taken probabilities. */
else if (line_num < 0)
{
/* Don't know what this is, but it's garbage. */
- abort();
+ abort ();
}
}
}
a_ptr = (struct arcdata *) xmalloc (sizeof (struct arcdata));
a_ptr->total = total;
if (total == 0)
- a_ptr->hits = 0;
+ a_ptr->hits = 0;
else
- a_ptr->hits = arcptr->arc_count;
+ a_ptr->hits = arcptr->arc_count;
a_ptr->call_insn = arcptr->fake;
if (output_function_summary)
{
/* If this is a relative file name, and an object directory has been
specified, then make it relative to the object directory name. */
- if (! (*s_ptr->name == '/' || *s_ptr->name == DIR_SEPARATOR
- /* Check for disk name on MS-DOS-based systems. */
- || (DIR_SEPARATOR == '\\'
- && s_ptr->name[1] == ':'
- && (s_ptr->name[2] == DIR_SEPARATOR
- || s_ptr->name[2] == '/')))
+ if (! IS_ABSOLUTE_PATHNAME (s_ptr->name)
&& object_directory != 0
&& *object_directory != '\0')
{
((a_ptr->hits * 100)
+ (a_ptr->total >> 1))
/ a_ptr->total);
- fnotice (gcov_file,
- "branch %d taken = %s%%\n", i, c);
+ fnotice (gcov_file,
+ "branch %d taken = %s%%\n", i, c);
}
}
}
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