GCC 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
+Software Foundation; either version 3, or (at your option) any later
version.
-In addition to the permissions in the GNU General Public License, the
-Free Software Foundation gives you unlimited permission to link the
-compiled version of this file into combinations with other programs,
-and to distribute those combinations without any restriction coming
-from the use of this file. (The General Public License restrictions
-do apply in other respects; for example, they cover modification of
-the file, and distribution when not linked into a combine
-executable.)
-
GCC 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 GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301, USA. */
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+<http://www.gnu.org/licenses/>. */
#include "tconfig.h"
#include "tsystem.h"
/* Size of the longest file name. */
static size_t gcov_max_filename = 0;
-#ifdef TARGET_POSIX_IO
-/* Make sure path component of the given FILENAME exists, create
- missing directories. FILENAME must be writable.
+/* Make sure path component of the given FILENAME exists, create
+ missing directories. FILENAME must be writable.
Returns zero on success, or -1 if an error occurred. */
static int
create_file_directory (char *filename)
{
+#if !defined(TARGET_POSIX_IO) && !defined(_WIN32)
+ (void) filename;
+ return -1;
+#else
char *s;
- for (s = filename + 1; *s != '\0'; s++)
+ s = filename;
+
+ if (HAS_DRIVE_SPEC(s))
+ s += 2;
+ if (IS_DIR_SEPARATOR(*s))
+ ++s;
+ for (; *s != '\0'; s++)
if (IS_DIR_SEPARATOR(*s))
{
char sep = *s;
/* Try to make directory if it doesn't already exist. */
if (access (filename, F_OK) == -1
+#ifdef TARGET_POSIX_IO
&& mkdir (filename, 0755) == -1
+#else
+ && mkdir (filename) == -1
+#endif
/* The directory might have been made by another process. */
&& errno != EEXIST)
{
*s = sep;
return -1;
};
-
+
*s = sep;
};
return 0;
-}
#endif
+}
/* Check if VERSION of the info block PTR matches libgcov one.
Return 1 on success, or zero in case of versions mismatch.
- If FILENAME is not NULL, its value used for reporting purposes
+ If FILENAME is not NULL, its value used for reporting purposes
instead of value from the info block. */
-
+
static int
gcov_version (struct gcov_info *ptr, gcov_unsigned_t version,
const char *filename)
GCOV_UNSIGNED2STRING (v, version);
GCOV_UNSIGNED2STRING (e, GCOV_VERSION);
-
+
fprintf (stderr,
"profiling:%s:Version mismatch - expected %.4s got %.4s\n",
filename? filename : ptr->filename, e, v);
}
}
+ {
+ /* Check if the level of dirs to strip off specified. */
+ char *tmp = getenv("GCOV_PREFIX_STRIP");
+ if (tmp)
+ {
+ gcov_prefix_strip = atoi (tmp);
+ /* Do not consider negative values. */
+ if (gcov_prefix_strip < 0)
+ gcov_prefix_strip = 0;
+ }
+ }
/* Get file name relocation prefix. Non-absolute values are ignored. */
gcov_prefix = getenv("GCOV_PREFIX");
- if (gcov_prefix && IS_ABSOLUTE_PATH (gcov_prefix))
+ if (gcov_prefix)
{
- /* Check if the level of dirs to strip off specified. */
- char *tmp = getenv("GCOV_PREFIX_STRIP");
- if (tmp)
- {
- gcov_prefix_strip = atoi (tmp);
- /* Do not consider negative values. */
- if (gcov_prefix_strip < 0)
- gcov_prefix_strip = 0;
- }
-
prefix_length = strlen(gcov_prefix);
/* Remove an unnecessary trailing '/' */
}
else
prefix_length = 0;
-
- /* Allocate and initialize the filename scratch space. */
- gi_filename = (char *) alloca (prefix_length + gcov_max_filename + 1);
+
+ /* If no prefix was specified and a prefix stip, then we assume
+ relative. */
+ if (gcov_prefix_strip != 0 && prefix_length == 0)
+ {
+ gcov_prefix = ".";
+ prefix_length = 1;
+ }
+ /* Allocate and initialize the filename scratch space plus one. */
+ gi_filename = (char *) alloca (prefix_length + gcov_max_filename + 2);
if (prefix_length)
memcpy (gi_filename, gcov_prefix, prefix_length);
gi_filename_up = gi_filename + prefix_length;
-
+
/* Now merge each file. */
for (gi_ptr = gcov_list; gi_ptr; gi_ptr = gi_ptr->next)
{
gcov_unsigned_t tag, length;
gcov_position_t summary_pos = 0;
gcov_position_t eof_pos = 0;
+ const char *fname, *s;
+
+ fname = gi_ptr->filename;
memset (&this_object, 0, sizeof (this_object));
memset (&object, 0, sizeof (object));
-
- /* Build relocated filename, stripping off leading
+
+ /* Avoid to add multiple drive letters into combined path. */
+ if (prefix_length != 0 && HAS_DRIVE_SPEC(fname))
+ fname += 2;
+
+ /* Build relocated filename, stripping off leading
directories from the initial filename if requested. */
if (gcov_prefix_strip > 0)
{
int level = 0;
- const char *fname = gi_ptr->filename;
- const char *s;
+ s = fname;
+ if (IS_DIR_SEPARATOR(*s))
+ ++s;
/* Skip selected directory levels. */
- for (s = fname + 1; (*s != '\0') && (level < gcov_prefix_strip); s++)
+ for (; (*s != '\0') && (level < gcov_prefix_strip); s++)
if (IS_DIR_SEPARATOR(*s))
{
fname = s;
level++;
- };
-
- /* Update complete filename with stripped original. */
- strcpy (gi_filename_up, fname);
+ }
}
+ /* Update complete filename with stripped original. */
+ if (!IS_DIR_SEPARATOR (*fname))
+ {
+ strcpy (gi_filename_up, "/");
+ strcpy (gi_filename_up + 1, fname);
+ }
else
- strcpy (gi_filename_up, gi_ptr->filename);
+ strcpy (gi_filename_up, fname);
/* Totals for this object file. */
ci_ptr = gi_ptr->counts;
fi_stride += __alignof__ (struct gcov_fn_info) - 1;
fi_stride &= ~(__alignof__ (struct gcov_fn_info) - 1);
}
-
+
if (!gcov_open (gi_filename))
{
-#ifdef TARGET_POSIX_IO
/* Open failed likely due to missed directory.
Create directory and retry to open file. */
if (create_file_directory (gi_filename))
fprintf (stderr, "profiling:%s:Skip\n", gi_filename);
continue;
}
-#endif
if (!gcov_open (gi_filename))
{
fprintf (stderr, "profiling:%s:Cannot open\n", gi_filename);
if (length != gi_ptr->stamp)
/* Read from a different compilation. Overwrite the file. */
goto rewrite;
-
+
/* Merge execution counts for each function. */
for (f_ix = 0; f_ix < gi_ptr->n_functions; f_ix++)
{
if (!((1 << t_ix) & gi_ptr->ctr_mask))
continue;
-
+
n_counts = fi_ptr->n_ctrs[c_ix];
merge = gi_ptr->counts[c_ix].merge;
-
+
tag = gcov_read_unsigned ();
length = gcov_read_unsigned ();
if (tag != GCOV_TAG_FOR_COUNTER (t_ix)
while (1)
{
int is_program;
-
+
eof_pos = gcov_position ();
tag = gcov_read_unsigned ();
if (!tag)
}
}
goto rewrite;
-
+
read_error:;
fprintf (stderr, error < 0 ? "profiling:%s:Overflow merging\n"
: "profiling:%s:Error merging\n", gi_filename);
-
+
read_fatal:;
gcov_close ();
continue;
if (cs_obj->run_max < cs_tobj->run_max)
cs_obj->run_max = cs_tobj->run_max;
cs_obj->sum_max += cs_tobj->run_max;
-
+
if (!cs_prg->runs++)
cs_prg->num = cs_tprg->num;
else if (cs_prg->num != cs_tprg->num)
}
else if (cs_obj->num || cs_prg->num)
goto read_mismatch;
-
+
if (!cs_all->runs && cs_prg->runs)
memcpy (cs_all, cs_prg, sizeof (*cs_all));
else if (!all.checksum
all.checksum = ~0u;
}
}
-
+
c_ix = 0;
for (t_ix = 0; t_ix < GCOV_COUNTERS; t_ix++)
if ((1 << t_ix) & gi_ptr->ctr_mask)
}
program.checksum = gcov_crc32;
-
+
/* Write out the data. */
gcov_write_tag_length (GCOV_DATA_MAGIC, GCOV_VERSION);
gcov_write_unsigned (gi_ptr->stamp);
-
+
/* Write execution counts for each function. */
for (f_ix = 0; f_ix < gi_ptr->n_functions; f_ix++)
{
continue;
n_counts = fi_ptr->n_ctrs[c_ix];
-
+
gcov_write_tag_length (GCOV_TAG_FOR_COUNTER (t_ix),
GCOV_TAG_COUNTER_LENGTH (n_counts));
c_ptr = values[c_ix];
/* Refresh the longest file name information */
if (filename_length > gcov_max_filename)
gcov_max_filename = filename_length;
-
+
do
{
unsigned ix;
}
}
while (*ptr++);
-
+
gcov_crc32 = crc32;
-
+
if (!gcov_list)
atexit (gcov_exit);
-
+
info->next = gcov_list;
gcov_list = info;
}
{
unsigned t_ix;
const struct gcov_ctr_info *ci_ptr;
-
+
for (t_ix = 0, ci_ptr = gi_ptr->counts; t_ix != GCOV_COUNTERS; t_ix++)
if ((1 << t_ix) & gi_ptr->ctr_mask)
{
reads the same number of counters from the gcov file. The counters
are split into 3-tuples where the members of the tuple have
meanings:
-
+
-- the stored candidate on the most common value of the measured entity
-- counter
-- total number of evaluations of the value */
given an array COUNTERS of N_COUNTERS old counters and it reads the
same number of counters from the gcov file. The counters are split
into 4-tuples where the members of the tuple have meanings:
-
+
-- the last value of the measured entity
-- the stored candidate on the most common difference
-- counter
__gcov_merge_delta (gcov_type *counters, unsigned n_counters)
{
unsigned i, n_measures;
- gcov_type last, value, counter, all;
+ gcov_type value, counter, all;
gcc_assert (!(n_counters % 4));
n_measures = n_counters / 4;
for (i = 0; i < n_measures; i++, counters += 4)
{
- last = gcov_read_counter ();
+ /* last = */ gcov_read_counter ();
value = gcov_read_counter ();
counter = gcov_read_counter ();
all = gcov_read_counter ();
#endif
#ifdef L_gcov_indirect_call_profiler
+
+/* By default, the C++ compiler will use function addresses in the
+ vtable entries. Setting TARGET_VTABLE_USES_DESCRIPTORS to nonzero
+ tells the compiler to use function descriptors instead. The value
+ of this macro says how many words wide the descriptor is (normally 2),
+ but it may be dependent on target flags. Since we do not have access
+ to the target flags here we just check to see if it is set and use
+ that to set VTABLE_USES_DESCRIPTORS to 0 or 1.
+
+ It is assumed that the address of a function descriptor may be treated
+ as a pointer to a function. */
+
+#ifdef TARGET_VTABLE_USES_DESCRIPTORS
+#define VTABLE_USES_DESCRIPTORS 1
+#else
+#define VTABLE_USES_DESCRIPTORS 0
+#endif
+
/* Tries to determine the most common value among its inputs. */
void
-__gcov_indirect_call_profiler (gcov_type* counter, gcov_type value,
+__gcov_indirect_call_profiler (gcov_type* counter, gcov_type value,
void* cur_func, void* callee_func)
{
/* If the C++ virtual tables contain function descriptors then one
function may have multiple descriptors and we need to dereference
the descriptors to see if they point to the same function. */
if (cur_func == callee_func
- || (TARGET_VTABLE_USES_DESCRIPTORS && callee_func
+ || (VTABLE_USES_DESCRIPTORS && callee_func
&& *(void **) cur_func == *(void **) callee_func))
__gcov_one_value_profiler_body (counter, value);
}
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