/* Read and write coverage files, and associated functionality.
Copyright (C) 1990, 1991, 1992, 1993, 1994, 1996, 1997, 1998, 1999,
- 2000, 2001, 2003 Free Software Foundation, Inc.
+ 2000, 2001, 2003, 2004 Free Software Foundation, Inc.
Contributed by James E. Wilson, UC Berkeley/Cygnus Support;
based on some ideas from Dain Samples of UC Berkeley.
Further mangling by Bob Manson, Cygnus Support.
static void htab_counts_entry_del (void *);
static void read_counts_file (void);
static unsigned compute_checksum (void);
-static unsigned checksum_string (unsigned, const char *);
+static unsigned coverage_checksum_string (unsigned, const char *);
static tree build_fn_info_type (unsigned);
static tree build_fn_info_value (const struct function_list *, tree);
static tree build_ctr_info_type (void);
counts_entry_t *summaried = NULL;
unsigned seen_summary = 0;
gcov_unsigned_t tag;
- int error = 0;
+ int is_error = 0;
if (!gcov_open (da_file_name, 1))
return;
entry->summary.num = n_counts;
entry->counts = xcalloc (n_counts, sizeof (gcov_type));
}
- else if (entry->checksum != checksum
- || entry->summary.num != n_counts)
+ else if (entry->checksum != checksum)
{
- warning ("coverage mismatch for function %u", fn_ident);
+ error ("coverage mismatch for function %u while reading execution counters.",
+ fn_ident);
+ error ("checksum is %x instead of %x", entry->checksum, checksum);
+ htab_delete (counts_hash);
+ break;
+ }
+ else if (entry->summary.num != n_counts)
+ {
+ error ("coverage mismatch for function %u while reading execution counters.",
+ fn_ident);
+ error ("number of counters is %d instead of %d", entry->summary.num, n_counts);
htab_delete (counts_hash);
break;
}
else if (elt.ctr >= GCOV_COUNTERS_SUMMABLE)
{
- warning ("cannot merge separate %s counters for function %u",
- ctr_names[elt.ctr], fn_ident);
+ error ("cannot merge separate %s counters for function %u",
+ ctr_names[elt.ctr], fn_ident);
goto skip_merge;
}
skip_merge:;
}
gcov_sync (offset, length);
- if ((error = gcov_is_error ()))
+ if ((is_error = gcov_is_error ()))
break;
}
if (!gcov_is_eof ())
{
- warning (error < 0 ? "`%s' has overflowed" : "`%s' is corrupted",
- da_file_name);
+ error (is_error < 0 ? "`%s' has overflowed" : "`%s' is corrupted",
+ da_file_name);
htab_delete (counts_hash);
}
const struct gcov_ctr_summary **summary)
{
counts_entry_t *entry, elt;
+ gcov_unsigned_t checksum = -1;
/* No hash table, no counts. */
if (!counts_hash)
static int warned = 0;
if (!warned++)
- warning ("file %s not found, execution counts assumed to be zero",
- da_file_name);
+ inform ((flag_guess_branch_prob
+ ? "file %s not found, execution counts estimated"
+ : "file %s not found, execution counts assumed to be zero"),
+ da_file_name);
return NULL;
}
return 0;
}
- if (expected != entry->summary.num
- || compute_checksum () != entry->checksum)
+ checksum = compute_checksum ();
+ if (entry->checksum != checksum)
{
- warning ("coverage mismatch for `%s'", IDENTIFIER_POINTER
- (DECL_ASSEMBLER_NAME (current_function_decl)));
- return NULL;
+ error ("coverage mismatch for function '%s' while reading counter '%s'.",
+ IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (current_function_decl)),
+ ctr_names[counter]);
+ error ("checksum is %x instead of %x", entry->checksum, checksum);
+ return 0;
+ }
+ else if (entry->summary.num != expected)
+ {
+ error ("coverage mismatch for function '%s' while reading counter '%s'.",
+ IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (current_function_decl)),
+ ctr_names[counter]);
+ error ("number of counters is %d instead of %d", entry->summary.num, expected);
+ return 0;
}
if (summary)
ASM_GENERATE_INTERNAL_LABEL (buf, "LPBX", counter + 1);
ctr_labels[counter] = gen_rtx_SYMBOL_REF (Pmode, ggc_strdup (buf));
+ SYMBOL_REF_FLAGS (ctr_labels[counter]) = SYMBOL_FLAG_LOCAL;
}
fn_b_ctrs[counter] = fn_n_ctrs[counter];
fn_n_ctrs[counter] += num;
checksum. */
static unsigned
-checksum_string (unsigned chksum, const char *string)
+coverage_checksum_string (unsigned chksum, const char *string)
{
- do
+ int i;
+ char *dup = NULL;
+
+ /* Look for everything that looks if it were produced by
+ get_file_function_name_long and zero out the second part
+ that may result from flag_random_seed. This is not critical
+ as the checksums are used only for sanity checking. */
+ for (i = 0; string[i]; i++)
{
- unsigned value = *string << 24;
- unsigned ix;
-
- for (ix = 8; ix--; value <<= 1)
- {
- unsigned feedback;
-
- feedback = (value ^ chksum) & 0x80000000 ? 0x04c11db7 : 0;
- chksum <<= 1;
- chksum ^= feedback;
- }
+ if (!strncmp (string + i, "_GLOBAL__", 9))
+ for (i = i + 9; string[i]; i++)
+ if (string[i]=='_')
+ {
+ int y;
+ unsigned seed;
+
+ for (y = 1; y < 9; y++)
+ if (!(string[i + y] >= '0' && string[i + y] <= '9')
+ && !(string[i + y] >= 'A' && string[i + y] <= 'F'))
+ break;
+ if (y != 9 || string[i + 9] != '_')
+ continue;
+ for (y = 10; y < 18; y++)
+ if (!(string[i + y] >= '0' && string[i + y] <= '9')
+ && !(string[i + y] >= 'A' && string[i + y] <= 'F'))
+ break;
+ if (y != 18)
+ continue;
+ if (!sscanf (string + i + 10, "%X", &seed))
+ abort ();
+ if (seed != crc32_string (0, flag_random_seed))
+ continue;
+ string = dup = xstrdup (string);
+ for (y = 10; y < 18; y++)
+ dup[i + y] = '0';
+ break;
+ }
+ break;
}
- while (*string++);
+
+ chksum = crc32_string (chksum, string);
+ if (dup)
+ free (dup);
return chksum;
}
{
unsigned chksum = DECL_SOURCE_LINE (current_function_decl);
- chksum = checksum_string (chksum, DECL_SOURCE_FILE (current_function_decl));
- chksum = checksum_string
+ chksum = coverage_checksum_string (chksum,
+ DECL_SOURCE_FILE (current_function_decl));
+ chksum = coverage_checksum_string
(chksum, IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (current_function_decl)));
return chksum;
OSDN Git Service
