/* Routines required for instrumenting a program. */
/* Compile this one with gcc. */
/* Copyright (C) 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+ 2000, 2001, 2002, 2003, 2004, 2005, 2008, 2009
+ Free Software Foundation, Inc.
This file is part of GCC.
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"
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
*s = sep;
return -1;
};
-
+
*s = sep;
};
return 0;
/* 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);
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 (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)
{
memset (&this_object, 0, sizeof (this_object));
memset (&object, 0, sizeof (object));
-
- /* Build relocated filename, stripping off leading
+
+ /* Build relocated filename, stripping off leading
directories from the initial filename if requested. */
if (gcov_prefix_strip > 0)
{
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
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)
{
}
#endif /* L_gcov_merge_add */
+#ifdef L_gcov_merge_ior
+/* The profile merging function that just adds the counters. It is given
+ an array COUNTERS of N_COUNTERS old counters and it reads the same number
+ of counters from the gcov file. */
+void
+__gcov_merge_ior (gcov_type *counters, unsigned n_counters)
+{
+ for (; n_counters; counters++, n_counters--)
+ *counters |= gcov_read_counter ();
+}
+#endif
+
#ifdef L_gcov_merge_single
/* The profile merging function for choosing the most common value.
It is 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 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_one_value_profiler
/* Tries to determine the most common value among its inputs. Checks if the
value stored in COUNTERS[0] matches VALUE. If this is the case, COUNTERS[1]
is incremented. If this is not the case and COUNTERS[1] is not zero,
In any case, COUNTERS[2] is incremented. */
-void
-__gcov_one_value_profiler (gcov_type *counters, gcov_type value)
+static inline void
+__gcov_one_value_profiler_body (gcov_type *counters, gcov_type value)
{
if (value == counters[0])
counters[1]++;
counters[1]--;
counters[2]++;
}
+
+#ifdef L_gcov_one_value_profiler
+void
+__gcov_one_value_profiler (gcov_type *counters, gcov_type value)
+{
+ __gcov_one_value_profiler_body (counters, value);
+}
+#endif
+
+#ifdef L_gcov_indirect_call_profiler
+/* Tries to determine the most common value among its inputs. */
+void
+__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
+ && *(void **) cur_func == *(void **) callee_func))
+ __gcov_one_value_profiler_body (counter, value);
+}
+#endif
+
+
+#ifdef L_gcov_average_profiler
+/* Increase corresponding COUNTER by VALUE. FIXME: Perhaps we want
+ to saturate up. */
+
+void
+__gcov_average_profiler (gcov_type *counters, gcov_type value)
+{
+ counters[0] += value;
+ counters[1] ++;
+}
+#endif
+
+#ifdef L_gcov_ior_profiler
+/* Increase corresponding COUNTER by VALUE. FIXME: Perhaps we want
+ to saturate up. */
+
+void
+__gcov_ior_profiler (gcov_type *counters, gcov_type value)
+{
+ *counters |= value;
+}
#endif
#ifdef L_gcov_fork
that they are not lost. */
int
-__gcov_execl (const char *path, const char *arg, ...)
+__gcov_execl (const char *path, char *arg, ...)
{
va_list ap, aq;
unsigned i, length;
va_end (ap);
args = (char **) alloca (length * sizeof (void *));
- args[0] = (char *) arg;
+ args[0] = arg;
for (i = 1; i < length; i++)
args[i] = va_arg (aq, char *);
va_end (aq);
that they are not lost. */
int
-__gcov_execlp (const char *path, const char *arg, ...)
+__gcov_execlp (const char *path, char *arg, ...)
{
va_list ap, aq;
unsigned i, length;
va_end (ap);
args = (char **) alloca (length * sizeof (void *));
- args[0] = (char *) arg;
+ args[0] = arg;
for (i = 1; i < length; i++)
args[i] = va_arg (aq, char *);
va_end (aq);
that they are not lost. */
int
-__gcov_execle (const char *path, const char *arg, ...)
+__gcov_execle (const char *path, char *arg, ...)
{
va_list ap, aq;
unsigned i, length;
va_end (ap);
args = (char **) alloca (length * sizeof (void *));
- args[0] = (char *) arg;
+ args[0] = arg;
for (i = 1; i < length; i++)
args[i] = va_arg (aq, char *);
envp = va_arg (aq, char **);
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