+2011-07-08 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
+
+ * Makefile.in (LIBGCOV): Remove.
+ (libgcc.mvars): Remove LIBGCOV.
+ * libgov.c: Move to ../libgcc.
+
2011-07-08 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
* config/fixed-bit.c, config/fixed-bit.h: Move to ../libgcc.
# Defined in libgcc2.c, included only in the static library.
LIB2FUNCS_ST = _eprintf __gcc_bcmp
-# Defined in libgcov.c, included only in gcov library
-LIBGCOV = _gcov _gcov_merge_add _gcov_merge_single _gcov_merge_delta \
- _gcov_fork _gcov_execl _gcov_execlp _gcov_execle \
- _gcov_execv _gcov_execvp _gcov_execve \
- _gcov_interval_profiler _gcov_pow2_profiler _gcov_one_value_profiler \
- _gcov_indirect_call_profiler _gcov_average_profiler _gcov_ior_profiler \
- _gcov_merge_ior
-
FPBIT_FUNCS = _pack_sf _unpack_sf _addsub_sf _mul_sf _div_sf \
_fpcmp_parts_sf _compare_sf _eq_sf _ne_sf _gt_sf _ge_sf \
_lt_sf _le_sf _unord_sf _si_to_sf _sf_to_si _negate_sf _make_sf \
echo LIB1ASMSRC = '$(LIB1ASMSRC)' >> tmp-libgcc.mvars
echo LIB2FUNCS_ST = '$(LIB2FUNCS_ST)' >> tmp-libgcc.mvars
echo LIB2FUNCS_EXCLUDE = '$(LIB2FUNCS_EXCLUDE)' >> tmp-libgcc.mvars
- echo LIBGCOV = '$(LIBGCOV)' >> tmp-libgcc.mvars
echo LIB2ADD = '$(call srcdirify,$(LIB2ADD))' >> tmp-libgcc.mvars
echo LIB2ADD_ST = '$(call srcdirify,$(LIB2ADD_ST))' >> tmp-libgcc.mvars
echo LIB2ADDEH = '$(call srcdirify,$(LIB2ADDEH) $(srcdir)/emutls.c)' >> tmp-libgcc.mvars
+++ /dev/null
-/* 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, 2008, 2009, 2010
- 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 3, or (at your option) any later
-version.
-
-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.
-
-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"
-#include "coretypes.h"
-#include "tm.h"
-
-#if defined(inhibit_libc)
-#define IN_LIBGCOV (-1)
-#else
-#undef NULL /* Avoid errors if stdio.h and our stddef.h mismatch. */
-#include <stdio.h>
-#define IN_LIBGCOV 1
-#if defined(L_gcov)
-#define GCOV_LINKAGE /* nothing */
-#endif
-#endif
-#include "gcov-io.h"
-
-#if defined(inhibit_libc)
-/* If libc and its header files are not available, provide dummy functions. */
-
-#ifdef L_gcov
-void __gcov_init (struct gcov_info *p __attribute__ ((unused))) {}
-void __gcov_flush (void) {}
-#endif
-
-#ifdef L_gcov_merge_add
-void __gcov_merge_add (gcov_type *counters __attribute__ ((unused)),
- unsigned n_counters __attribute__ ((unused))) {}
-#endif
-
-#ifdef L_gcov_merge_single
-void __gcov_merge_single (gcov_type *counters __attribute__ ((unused)),
- unsigned n_counters __attribute__ ((unused))) {}
-#endif
-
-#ifdef L_gcov_merge_delta
-void __gcov_merge_delta (gcov_type *counters __attribute__ ((unused)),
- unsigned n_counters __attribute__ ((unused))) {}
-#endif
-
-#else
-
-#include <string.h>
-#if GCOV_LOCKED
-#include <fcntl.h>
-#include <errno.h>
-#include <sys/stat.h>
-#endif
-
-#ifdef L_gcov
-#include "gcov-io.c"
-
-/* Chain of per-object gcov structures. */
-static struct gcov_info *gcov_list;
-
-/* A program checksum allows us to distinguish program data for an
- object file included in multiple programs. */
-static gcov_unsigned_t gcov_crc32;
-
-/* Size of the longest file name. */
-static size_t gcov_max_filename = 0;
-
-/* 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;
-
- 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;
- *s = '\0';
-
- /* 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)
- {
- fprintf (stderr, "profiling:%s:Cannot create directory\n",
- filename);
- *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
- instead of value from the info block. */
-
-static int
-gcov_version (struct gcov_info *ptr, gcov_unsigned_t version,
- const char *filename)
-{
- if (version != GCOV_VERSION)
- {
- char v[4], e[4];
-
- 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);
- return 0;
- }
- return 1;
-}
-
-/* Dump the coverage counts. We merge with existing counts when
- possible, to avoid growing the .da files ad infinitum. We use this
- program's checksum to make sure we only accumulate whole program
- statistics to the correct summary. An object file might be embedded
- in two separate programs, and we must keep the two program
- summaries separate. */
-
-static void
-gcov_exit (void)
-{
- struct gcov_info *gi_ptr;
- struct gcov_summary this_program;
- struct gcov_summary all;
- struct gcov_ctr_summary *cs_ptr;
- const struct gcov_ctr_info *ci_ptr;
- unsigned t_ix;
- gcov_unsigned_t c_num;
- const char *gcov_prefix;
- int gcov_prefix_strip = 0;
- size_t prefix_length;
- char *gi_filename, *gi_filename_up;
-
- memset (&all, 0, sizeof (all));
- /* Find the totals for this execution. */
- memset (&this_program, 0, sizeof (this_program));
- for (gi_ptr = gcov_list; gi_ptr; gi_ptr = gi_ptr->next)
- {
- ci_ptr = gi_ptr->counts;
- for (t_ix = 0; t_ix < GCOV_COUNTERS_SUMMABLE; t_ix++)
- {
- if (!((1 << t_ix) & gi_ptr->ctr_mask))
- continue;
-
- cs_ptr = &this_program.ctrs[t_ix];
- cs_ptr->num += ci_ptr->num;
- for (c_num = 0; c_num < ci_ptr->num; c_num++)
- {
- cs_ptr->sum_all += ci_ptr->values[c_num];
- if (cs_ptr->run_max < ci_ptr->values[c_num])
- cs_ptr->run_max = ci_ptr->values[c_num];
- }
- ci_ptr++;
- }
- }
-
- {
- /* 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)
- {
- prefix_length = strlen(gcov_prefix);
-
- /* Remove an unnecessary trailing '/' */
- if (IS_DIR_SEPARATOR (gcov_prefix[prefix_length - 1]))
- prefix_length--;
- }
- else
- prefix_length = 0;
-
- /* 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)
- {
- struct gcov_summary this_object;
- struct gcov_summary object, program;
- gcov_type *values[GCOV_COUNTERS];
- const struct gcov_fn_info *fi_ptr;
- unsigned fi_stride;
- unsigned c_ix, f_ix, n_counts;
- struct gcov_ctr_summary *cs_obj, *cs_tobj, *cs_prg, *cs_tprg, *cs_all;
- int error = 0;
- 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));
-
- /* 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;
- s = fname;
- if (IS_DIR_SEPARATOR(*s))
- ++s;
-
- /* Skip selected directory levels. */
- for (; (*s != '\0') && (level < gcov_prefix_strip); s++)
- if (IS_DIR_SEPARATOR(*s))
- {
- fname = s;
- level++;
- }
- }
- /* Update complete filename with stripped original. */
- if (prefix_length != 0 && !IS_DIR_SEPARATOR (*fname))
- {
- /* If prefix is given, add directory separator. */
- strcpy (gi_filename_up, "/");
- strcpy (gi_filename_up + 1, fname);
- }
- else
- strcpy (gi_filename_up, fname);
-
- /* Totals for this object file. */
- ci_ptr = gi_ptr->counts;
- for (t_ix = 0; t_ix < GCOV_COUNTERS_SUMMABLE; t_ix++)
- {
- if (!((1 << t_ix) & gi_ptr->ctr_mask))
- continue;
-
- cs_ptr = &this_object.ctrs[t_ix];
- cs_ptr->num += ci_ptr->num;
- for (c_num = 0; c_num < ci_ptr->num; c_num++)
- {
- cs_ptr->sum_all += ci_ptr->values[c_num];
- if (cs_ptr->run_max < ci_ptr->values[c_num])
- cs_ptr->run_max = ci_ptr->values[c_num];
- }
-
- ci_ptr++;
- }
-
- c_ix = 0;
- for (t_ix = 0; t_ix < GCOV_COUNTERS; t_ix++)
- if ((1 << t_ix) & gi_ptr->ctr_mask)
- {
- values[c_ix] = gi_ptr->counts[c_ix].values;
- c_ix++;
- }
-
- /* Calculate the function_info stride. This depends on the
- number of counter types being measured. */
- fi_stride = sizeof (struct gcov_fn_info) + c_ix * sizeof (unsigned);
- if (__alignof__ (struct gcov_fn_info) > sizeof (unsigned))
- {
- fi_stride += __alignof__ (struct gcov_fn_info) - 1;
- fi_stride &= ~(__alignof__ (struct gcov_fn_info) - 1);
- }
-
- if (!gcov_open (gi_filename))
- {
- /* 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;
- }
- if (!gcov_open (gi_filename))
- {
- fprintf (stderr, "profiling:%s:Cannot open\n", gi_filename);
- continue;
- }
- }
-
- tag = gcov_read_unsigned ();
- if (tag)
- {
- /* Merge data from file. */
- if (tag != GCOV_DATA_MAGIC)
- {
- fprintf (stderr, "profiling:%s:Not a gcov data file\n",
- gi_filename);
- goto read_fatal;
- }
- length = gcov_read_unsigned ();
- if (!gcov_version (gi_ptr, length, gi_filename))
- goto read_fatal;
-
- length = gcov_read_unsigned ();
- 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++)
- {
- fi_ptr = (const struct gcov_fn_info *)
- ((const char *) gi_ptr->functions + f_ix * fi_stride);
- tag = gcov_read_unsigned ();
- length = gcov_read_unsigned ();
-
- /* Check function. */
- if (tag != GCOV_TAG_FUNCTION
- || length != GCOV_TAG_FUNCTION_LENGTH
- || gcov_read_unsigned () != fi_ptr->ident
- || gcov_read_unsigned () != fi_ptr->lineno_checksum
- || gcov_read_unsigned () != fi_ptr->cfg_checksum)
- {
- read_mismatch:;
- fprintf (stderr, "profiling:%s:Merge mismatch for %s\n",
- gi_filename,
- f_ix + 1 ? "function" : "summaries");
- goto read_fatal;
- }
-
- c_ix = 0;
- for (t_ix = 0; t_ix < GCOV_COUNTERS; t_ix++)
- {
- gcov_merge_fn merge;
-
- 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)
- || length != GCOV_TAG_COUNTER_LENGTH (n_counts))
- goto read_mismatch;
- (*merge) (values[c_ix], n_counts);
- values[c_ix] += n_counts;
- c_ix++;
- }
- if ((error = gcov_is_error ()))
- goto read_error;
- }
-
- f_ix = ~0u;
- /* Check program & object summary */
- while (1)
- {
- int is_program;
-
- eof_pos = gcov_position ();
- tag = gcov_read_unsigned ();
- if (!tag)
- break;
-
- length = gcov_read_unsigned ();
- is_program = tag == GCOV_TAG_PROGRAM_SUMMARY;
- if (length != GCOV_TAG_SUMMARY_LENGTH
- || (!is_program && tag != GCOV_TAG_OBJECT_SUMMARY))
- goto read_mismatch;
- gcov_read_summary (is_program ? &program : &object);
- if ((error = gcov_is_error ()))
- goto read_error;
- if (is_program && program.checksum == gcov_crc32)
- {
- summary_pos = eof_pos;
- goto rewrite;
- }
- }
- }
- 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;
-
- rewrite:;
- gcov_rewrite ();
- if (!summary_pos)
- memset (&program, 0, sizeof (program));
-
- /* Merge the summaries. */
- f_ix = ~0u;
- for (t_ix = 0; t_ix < GCOV_COUNTERS_SUMMABLE; t_ix++)
- {
- cs_obj = &object.ctrs[t_ix];
- cs_tobj = &this_object.ctrs[t_ix];
- cs_prg = &program.ctrs[t_ix];
- cs_tprg = &this_program.ctrs[t_ix];
- cs_all = &all.ctrs[t_ix];
-
- if ((1 << t_ix) & gi_ptr->ctr_mask)
- {
- if (!cs_obj->runs++)
- cs_obj->num = cs_tobj->num;
- else if (cs_obj->num != cs_tobj->num)
- goto read_mismatch;
- cs_obj->sum_all += cs_tobj->sum_all;
- 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)
- goto read_mismatch;
- cs_prg->sum_all += cs_tprg->sum_all;
- if (cs_prg->run_max < cs_tprg->run_max)
- cs_prg->run_max = cs_tprg->run_max;
- cs_prg->sum_max += cs_tprg->run_max;
- }
- 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
- && (!GCOV_LOCKED || cs_all->runs == cs_prg->runs)
- && memcmp (cs_all, cs_prg, sizeof (*cs_all)))
- {
- fprintf (stderr, "profiling:%s:Invocation mismatch - some data files may have been removed%s",
- gi_filename, GCOV_LOCKED
- ? "" : " or concurrent update without locking support");
- all.checksum = ~0u;
- }
- }
-
- c_ix = 0;
- for (t_ix = 0; t_ix < GCOV_COUNTERS; t_ix++)
- if ((1 << t_ix) & gi_ptr->ctr_mask)
- {
- values[c_ix] = gi_ptr->counts[c_ix].values;
- c_ix++;
- }
-
- 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++)
- {
- fi_ptr = (const struct gcov_fn_info *)
- ((const char *) gi_ptr->functions + f_ix * fi_stride);
-
- /* Announce function. */
- gcov_write_tag_length (GCOV_TAG_FUNCTION, GCOV_TAG_FUNCTION_LENGTH);
- gcov_write_unsigned (fi_ptr->ident);
- gcov_write_unsigned (fi_ptr->lineno_checksum);
- gcov_write_unsigned (fi_ptr->cfg_checksum);
-
- c_ix = 0;
- for (t_ix = 0; t_ix < GCOV_COUNTERS; t_ix++)
- {
- gcov_type *c_ptr;
-
- if (!((1 << t_ix) & gi_ptr->ctr_mask))
- 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];
- while (n_counts--)
- gcov_write_counter (*c_ptr++);
-
- values[c_ix] = c_ptr;
- c_ix++;
- }
- }
-
- /* Object file summary. */
- gcov_write_summary (GCOV_TAG_OBJECT_SUMMARY, &object);
-
- /* Generate whole program statistics. */
- if (eof_pos)
- gcov_seek (eof_pos);
- gcov_write_summary (GCOV_TAG_PROGRAM_SUMMARY, &program);
- if (!summary_pos)
- gcov_write_unsigned (0);
- if ((error = gcov_close ()))
- fprintf (stderr, error < 0 ?
- "profiling:%s:Overflow writing\n" :
- "profiling:%s:Error writing\n",
- gi_filename);
- }
-}
-
-/* Add a new object file onto the bb chain. Invoked automatically
- when running an object file's global ctors. */
-
-void
-__gcov_init (struct gcov_info *info)
-{
- if (!info->version)
- return;
- if (gcov_version (info, info->version, 0))
- {
- const char *ptr = info->filename;
- gcov_unsigned_t crc32 = gcov_crc32;
- size_t filename_length = strlen(info->filename);
-
- /* Refresh the longest file name information */
- if (filename_length > gcov_max_filename)
- gcov_max_filename = filename_length;
-
- do
- {
- unsigned ix;
- gcov_unsigned_t value = *ptr << 24;
-
- for (ix = 8; ix--; value <<= 1)
- {
- gcov_unsigned_t feedback;
-
- feedback = (value ^ crc32) & 0x80000000 ? 0x04c11db7 : 0;
- crc32 <<= 1;
- crc32 ^= feedback;
- }
- }
- while (*ptr++);
-
- gcov_crc32 = crc32;
-
- if (!gcov_list)
- atexit (gcov_exit);
-
- info->next = gcov_list;
- gcov_list = info;
- }
- info->version = 0;
-}
-
-/* Called before fork or exec - write out profile information gathered so
- far and reset it to zero. This avoids duplication or loss of the
- profile information gathered so far. */
-
-void
-__gcov_flush (void)
-{
- const struct gcov_info *gi_ptr;
-
- gcov_exit ();
- for (gi_ptr = gcov_list; gi_ptr; gi_ptr = gi_ptr->next)
- {
- 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)
- {
- memset (ci_ptr->values, 0, sizeof (gcov_type) * ci_ptr->num);
- ci_ptr++;
- }
- }
-}
-
-#endif /* L_gcov */
-
-#ifdef L_gcov_merge_add
-/* 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_add (gcov_type *counters, unsigned n_counters)
-{
- for (; n_counters; counters++, n_counters--)
- *counters += gcov_read_counter ();
-}
-#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 */
-void
-__gcov_merge_single (gcov_type *counters, unsigned n_counters)
-{
- unsigned i, n_measures;
- gcov_type value, counter, all;
-
- gcc_assert (!(n_counters % 3));
- n_measures = n_counters / 3;
- for (i = 0; i < n_measures; i++, counters += 3)
- {
- value = gcov_read_counter ();
- counter = gcov_read_counter ();
- all = gcov_read_counter ();
-
- if (counters[0] == value)
- counters[1] += counter;
- else if (counter > counters[1])
- {
- counters[0] = value;
- counters[1] = counter - counters[1];
- }
- else
- counters[1] -= counter;
- counters[2] += all;
- }
-}
-#endif /* L_gcov_merge_single */
-
-#ifdef L_gcov_merge_delta
-/* The profile merging function for choosing the most common
- difference between two consecutive evaluations of the 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 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
- -- total number of evaluations of the value */
-void
-__gcov_merge_delta (gcov_type *counters, unsigned n_counters)
-{
- unsigned i, n_measures;
- 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 ();
- value = gcov_read_counter ();
- counter = gcov_read_counter ();
- all = gcov_read_counter ();
-
- if (counters[1] == value)
- counters[2] += counter;
- else if (counter > counters[2])
- {
- counters[1] = value;
- counters[2] = counter - counters[2];
- }
- else
- counters[2] -= counter;
- counters[3] += all;
- }
-}
-#endif /* L_gcov_merge_delta */
-
-#ifdef L_gcov_interval_profiler
-/* If VALUE is in interval <START, START + STEPS - 1>, then increases the
- corresponding counter in COUNTERS. If the VALUE is above or below
- the interval, COUNTERS[STEPS] or COUNTERS[STEPS + 1] is increased
- instead. */
-
-void
-__gcov_interval_profiler (gcov_type *counters, gcov_type value,
- int start, unsigned steps)
-{
- gcov_type delta = value - start;
- if (delta < 0)
- counters[steps + 1]++;
- else if (delta >= steps)
- counters[steps]++;
- else
- counters[delta]++;
-}
-#endif
-
-#ifdef L_gcov_pow2_profiler
-/* If VALUE is a power of two, COUNTERS[1] is incremented. Otherwise
- COUNTERS[0] is incremented. */
-
-void
-__gcov_pow2_profiler (gcov_type *counters, gcov_type value)
-{
- if (value & (value - 1))
- counters[0]++;
- else
- counters[1]++;
-}
-#endif
-
-/* 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,
- COUNTERS[1] is decremented. Otherwise COUNTERS[1] is set to one and
- VALUE is stored to COUNTERS[0]. This algorithm guarantees that if this
- function is called more than 50% of the time with one value, this value
- will be in COUNTERS[0] in the end.
-
- In any case, COUNTERS[2] is incremented. */
-
-static inline void
-__gcov_one_value_profiler_body (gcov_type *counters, gcov_type value)
-{
- if (value == counters[0])
- counters[1]++;
- else if (counters[1] == 0)
- {
- counters[1] = 1;
- counters[0] = value;
- }
- else
- 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
-
-/* 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,
- 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
- || (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
-/* A wrapper for the fork function. Flushes the accumulated profiling data, so
- that they are not counted twice. */
-
-pid_t
-__gcov_fork (void)
-{
- __gcov_flush ();
- return fork ();
-}
-#endif
-
-#ifdef L_gcov_execl
-/* A wrapper for the execl function. Flushes the accumulated profiling data, so
- that they are not lost. */
-
-int
-__gcov_execl (const char *path, char *arg, ...)
-{
- va_list ap, aq;
- unsigned i, length;
- char **args;
-
- __gcov_flush ();
-
- va_start (ap, arg);
- va_copy (aq, ap);
-
- length = 2;
- while (va_arg (ap, char *))
- length++;
- va_end (ap);
-
- args = (char **) alloca (length * sizeof (void *));
- args[0] = arg;
- for (i = 1; i < length; i++)
- args[i] = va_arg (aq, char *);
- va_end (aq);
-
- return execv (path, args);
-}
-#endif
-
-#ifdef L_gcov_execlp
-/* A wrapper for the execlp function. Flushes the accumulated profiling data, so
- that they are not lost. */
-
-int
-__gcov_execlp (const char *path, char *arg, ...)
-{
- va_list ap, aq;
- unsigned i, length;
- char **args;
-
- __gcov_flush ();
-
- va_start (ap, arg);
- va_copy (aq, ap);
-
- length = 2;
- while (va_arg (ap, char *))
- length++;
- va_end (ap);
-
- args = (char **) alloca (length * sizeof (void *));
- args[0] = arg;
- for (i = 1; i < length; i++)
- args[i] = va_arg (aq, char *);
- va_end (aq);
-
- return execvp (path, args);
-}
-#endif
-
-#ifdef L_gcov_execle
-/* A wrapper for the execle function. Flushes the accumulated profiling data, so
- that they are not lost. */
-
-int
-__gcov_execle (const char *path, char *arg, ...)
-{
- va_list ap, aq;
- unsigned i, length;
- char **args;
- char **envp;
-
- __gcov_flush ();
-
- va_start (ap, arg);
- va_copy (aq, ap);
-
- length = 2;
- while (va_arg (ap, char *))
- length++;
- va_end (ap);
-
- args = (char **) alloca (length * sizeof (void *));
- args[0] = arg;
- for (i = 1; i < length; i++)
- args[i] = va_arg (aq, char *);
- envp = va_arg (aq, char **);
- va_end (aq);
-
- return execve (path, args, envp);
-}
-#endif
-
-#ifdef L_gcov_execv
-/* A wrapper for the execv function. Flushes the accumulated profiling data, so
- that they are not lost. */
-
-int
-__gcov_execv (const char *path, char *const argv[])
-{
- __gcov_flush ();
- return execv (path, argv);
-}
-#endif
-
-#ifdef L_gcov_execvp
-/* A wrapper for the execvp function. Flushes the accumulated profiling data, so
- that they are not lost. */
-
-int
-__gcov_execvp (const char *path, char *const argv[])
-{
- __gcov_flush ();
- return execvp (path, argv);
-}
-#endif
-
-#ifdef L_gcov_execve
-/* A wrapper for the execve function. Flushes the accumulated profiling data, so
- that they are not lost. */
-
-int
-__gcov_execve (const char *path, char *const argv[], char *const envp[])
-{
- __gcov_flush ();
- return execve (path, argv, envp);
-}
-#endif
-#endif /* inhibit_libc */
+2011-07-08 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
+
+ * Makfile.in (LIBGCOV): New variable.
+ ($(libgcov-objects)): Use $(srcdir) to refer to libgcov.c.
+ * libgcov.c: New file.
+
2011-07-08 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
* fixed-bit.c, fixed-bit.h: New files.
include $(iterator)
# Build libgcov components.
+
+# Defined in libgcov.c, included only in gcov library
+LIBGCOV = _gcov _gcov_merge_add _gcov_merge_single _gcov_merge_delta \
+ _gcov_fork _gcov_execl _gcov_execlp _gcov_execle \
+ _gcov_execv _gcov_execvp _gcov_execve \
+ _gcov_interval_profiler _gcov_pow2_profiler _gcov_one_value_profiler \
+ _gcov_indirect_call_profiler _gcov_average_profiler _gcov_ior_profiler \
+ _gcov_merge_ior
+
libgcov-objects = $(patsubst %,%$(objext),$(LIBGCOV))
-$(libgcov-objects): %$(objext): $(gcc_srcdir)/libgcov.c
- $(gcc_compile) -DL$* -c $(gcc_srcdir)/libgcov.c
+
+$(libgcov-objects): %$(objext): $(srcdir)/libgcov.c
+ $(gcc_compile) -DL$* -c $(srcdir)/libgcov.c
# Static libraries.
--- /dev/null
+/* 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, 2008, 2009, 2010
+ 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 3, or (at your option) any later
+version.
+
+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.
+
+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"
+#include "coretypes.h"
+#include "tm.h"
+
+#if defined(inhibit_libc)
+#define IN_LIBGCOV (-1)
+#else
+#undef NULL /* Avoid errors if stdio.h and our stddef.h mismatch. */
+#include <stdio.h>
+#define IN_LIBGCOV 1
+#if defined(L_gcov)
+#define GCOV_LINKAGE /* nothing */
+#endif
+#endif
+#include "gcov-io.h"
+
+#if defined(inhibit_libc)
+/* If libc and its header files are not available, provide dummy functions. */
+
+#ifdef L_gcov
+void __gcov_init (struct gcov_info *p __attribute__ ((unused))) {}
+void __gcov_flush (void) {}
+#endif
+
+#ifdef L_gcov_merge_add
+void __gcov_merge_add (gcov_type *counters __attribute__ ((unused)),
+ unsigned n_counters __attribute__ ((unused))) {}
+#endif
+
+#ifdef L_gcov_merge_single
+void __gcov_merge_single (gcov_type *counters __attribute__ ((unused)),
+ unsigned n_counters __attribute__ ((unused))) {}
+#endif
+
+#ifdef L_gcov_merge_delta
+void __gcov_merge_delta (gcov_type *counters __attribute__ ((unused)),
+ unsigned n_counters __attribute__ ((unused))) {}
+#endif
+
+#else
+
+#include <string.h>
+#if GCOV_LOCKED
+#include <fcntl.h>
+#include <errno.h>
+#include <sys/stat.h>
+#endif
+
+#ifdef L_gcov
+#include "gcov-io.c"
+
+/* Chain of per-object gcov structures. */
+static struct gcov_info *gcov_list;
+
+/* A program checksum allows us to distinguish program data for an
+ object file included in multiple programs. */
+static gcov_unsigned_t gcov_crc32;
+
+/* Size of the longest file name. */
+static size_t gcov_max_filename = 0;
+
+/* 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;
+
+ 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;
+ *s = '\0';
+
+ /* 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)
+ {
+ fprintf (stderr, "profiling:%s:Cannot create directory\n",
+ filename);
+ *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
+ instead of value from the info block. */
+
+static int
+gcov_version (struct gcov_info *ptr, gcov_unsigned_t version,
+ const char *filename)
+{
+ if (version != GCOV_VERSION)
+ {
+ char v[4], e[4];
+
+ 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);
+ return 0;
+ }
+ return 1;
+}
+
+/* Dump the coverage counts. We merge with existing counts when
+ possible, to avoid growing the .da files ad infinitum. We use this
+ program's checksum to make sure we only accumulate whole program
+ statistics to the correct summary. An object file might be embedded
+ in two separate programs, and we must keep the two program
+ summaries separate. */
+
+static void
+gcov_exit (void)
+{
+ struct gcov_info *gi_ptr;
+ struct gcov_summary this_program;
+ struct gcov_summary all;
+ struct gcov_ctr_summary *cs_ptr;
+ const struct gcov_ctr_info *ci_ptr;
+ unsigned t_ix;
+ gcov_unsigned_t c_num;
+ const char *gcov_prefix;
+ int gcov_prefix_strip = 0;
+ size_t prefix_length;
+ char *gi_filename, *gi_filename_up;
+
+ memset (&all, 0, sizeof (all));
+ /* Find the totals for this execution. */
+ memset (&this_program, 0, sizeof (this_program));
+ for (gi_ptr = gcov_list; gi_ptr; gi_ptr = gi_ptr->next)
+ {
+ ci_ptr = gi_ptr->counts;
+ for (t_ix = 0; t_ix < GCOV_COUNTERS_SUMMABLE; t_ix++)
+ {
+ if (!((1 << t_ix) & gi_ptr->ctr_mask))
+ continue;
+
+ cs_ptr = &this_program.ctrs[t_ix];
+ cs_ptr->num += ci_ptr->num;
+ for (c_num = 0; c_num < ci_ptr->num; c_num++)
+ {
+ cs_ptr->sum_all += ci_ptr->values[c_num];
+ if (cs_ptr->run_max < ci_ptr->values[c_num])
+ cs_ptr->run_max = ci_ptr->values[c_num];
+ }
+ ci_ptr++;
+ }
+ }
+
+ {
+ /* 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)
+ {
+ prefix_length = strlen(gcov_prefix);
+
+ /* Remove an unnecessary trailing '/' */
+ if (IS_DIR_SEPARATOR (gcov_prefix[prefix_length - 1]))
+ prefix_length--;
+ }
+ else
+ prefix_length = 0;
+
+ /* 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)
+ {
+ struct gcov_summary this_object;
+ struct gcov_summary object, program;
+ gcov_type *values[GCOV_COUNTERS];
+ const struct gcov_fn_info *fi_ptr;
+ unsigned fi_stride;
+ unsigned c_ix, f_ix, n_counts;
+ struct gcov_ctr_summary *cs_obj, *cs_tobj, *cs_prg, *cs_tprg, *cs_all;
+ int error = 0;
+ 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));
+
+ /* 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;
+ s = fname;
+ if (IS_DIR_SEPARATOR(*s))
+ ++s;
+
+ /* Skip selected directory levels. */
+ for (; (*s != '\0') && (level < gcov_prefix_strip); s++)
+ if (IS_DIR_SEPARATOR(*s))
+ {
+ fname = s;
+ level++;
+ }
+ }
+ /* Update complete filename with stripped original. */
+ if (prefix_length != 0 && !IS_DIR_SEPARATOR (*fname))
+ {
+ /* If prefix is given, add directory separator. */
+ strcpy (gi_filename_up, "/");
+ strcpy (gi_filename_up + 1, fname);
+ }
+ else
+ strcpy (gi_filename_up, fname);
+
+ /* Totals for this object file. */
+ ci_ptr = gi_ptr->counts;
+ for (t_ix = 0; t_ix < GCOV_COUNTERS_SUMMABLE; t_ix++)
+ {
+ if (!((1 << t_ix) & gi_ptr->ctr_mask))
+ continue;
+
+ cs_ptr = &this_object.ctrs[t_ix];
+ cs_ptr->num += ci_ptr->num;
+ for (c_num = 0; c_num < ci_ptr->num; c_num++)
+ {
+ cs_ptr->sum_all += ci_ptr->values[c_num];
+ if (cs_ptr->run_max < ci_ptr->values[c_num])
+ cs_ptr->run_max = ci_ptr->values[c_num];
+ }
+
+ ci_ptr++;
+ }
+
+ c_ix = 0;
+ for (t_ix = 0; t_ix < GCOV_COUNTERS; t_ix++)
+ if ((1 << t_ix) & gi_ptr->ctr_mask)
+ {
+ values[c_ix] = gi_ptr->counts[c_ix].values;
+ c_ix++;
+ }
+
+ /* Calculate the function_info stride. This depends on the
+ number of counter types being measured. */
+ fi_stride = sizeof (struct gcov_fn_info) + c_ix * sizeof (unsigned);
+ if (__alignof__ (struct gcov_fn_info) > sizeof (unsigned))
+ {
+ fi_stride += __alignof__ (struct gcov_fn_info) - 1;
+ fi_stride &= ~(__alignof__ (struct gcov_fn_info) - 1);
+ }
+
+ if (!gcov_open (gi_filename))
+ {
+ /* 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;
+ }
+ if (!gcov_open (gi_filename))
+ {
+ fprintf (stderr, "profiling:%s:Cannot open\n", gi_filename);
+ continue;
+ }
+ }
+
+ tag = gcov_read_unsigned ();
+ if (tag)
+ {
+ /* Merge data from file. */
+ if (tag != GCOV_DATA_MAGIC)
+ {
+ fprintf (stderr, "profiling:%s:Not a gcov data file\n",
+ gi_filename);
+ goto read_fatal;
+ }
+ length = gcov_read_unsigned ();
+ if (!gcov_version (gi_ptr, length, gi_filename))
+ goto read_fatal;
+
+ length = gcov_read_unsigned ();
+ 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++)
+ {
+ fi_ptr = (const struct gcov_fn_info *)
+ ((const char *) gi_ptr->functions + f_ix * fi_stride);
+ tag = gcov_read_unsigned ();
+ length = gcov_read_unsigned ();
+
+ /* Check function. */
+ if (tag != GCOV_TAG_FUNCTION
+ || length != GCOV_TAG_FUNCTION_LENGTH
+ || gcov_read_unsigned () != fi_ptr->ident
+ || gcov_read_unsigned () != fi_ptr->lineno_checksum
+ || gcov_read_unsigned () != fi_ptr->cfg_checksum)
+ {
+ read_mismatch:;
+ fprintf (stderr, "profiling:%s:Merge mismatch for %s\n",
+ gi_filename,
+ f_ix + 1 ? "function" : "summaries");
+ goto read_fatal;
+ }
+
+ c_ix = 0;
+ for (t_ix = 0; t_ix < GCOV_COUNTERS; t_ix++)
+ {
+ gcov_merge_fn merge;
+
+ 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)
+ || length != GCOV_TAG_COUNTER_LENGTH (n_counts))
+ goto read_mismatch;
+ (*merge) (values[c_ix], n_counts);
+ values[c_ix] += n_counts;
+ c_ix++;
+ }
+ if ((error = gcov_is_error ()))
+ goto read_error;
+ }
+
+ f_ix = ~0u;
+ /* Check program & object summary */
+ while (1)
+ {
+ int is_program;
+
+ eof_pos = gcov_position ();
+ tag = gcov_read_unsigned ();
+ if (!tag)
+ break;
+
+ length = gcov_read_unsigned ();
+ is_program = tag == GCOV_TAG_PROGRAM_SUMMARY;
+ if (length != GCOV_TAG_SUMMARY_LENGTH
+ || (!is_program && tag != GCOV_TAG_OBJECT_SUMMARY))
+ goto read_mismatch;
+ gcov_read_summary (is_program ? &program : &object);
+ if ((error = gcov_is_error ()))
+ goto read_error;
+ if (is_program && program.checksum == gcov_crc32)
+ {
+ summary_pos = eof_pos;
+ goto rewrite;
+ }
+ }
+ }
+ 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;
+
+ rewrite:;
+ gcov_rewrite ();
+ if (!summary_pos)
+ memset (&program, 0, sizeof (program));
+
+ /* Merge the summaries. */
+ f_ix = ~0u;
+ for (t_ix = 0; t_ix < GCOV_COUNTERS_SUMMABLE; t_ix++)
+ {
+ cs_obj = &object.ctrs[t_ix];
+ cs_tobj = &this_object.ctrs[t_ix];
+ cs_prg = &program.ctrs[t_ix];
+ cs_tprg = &this_program.ctrs[t_ix];
+ cs_all = &all.ctrs[t_ix];
+
+ if ((1 << t_ix) & gi_ptr->ctr_mask)
+ {
+ if (!cs_obj->runs++)
+ cs_obj->num = cs_tobj->num;
+ else if (cs_obj->num != cs_tobj->num)
+ goto read_mismatch;
+ cs_obj->sum_all += cs_tobj->sum_all;
+ 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)
+ goto read_mismatch;
+ cs_prg->sum_all += cs_tprg->sum_all;
+ if (cs_prg->run_max < cs_tprg->run_max)
+ cs_prg->run_max = cs_tprg->run_max;
+ cs_prg->sum_max += cs_tprg->run_max;
+ }
+ 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
+ && (!GCOV_LOCKED || cs_all->runs == cs_prg->runs)
+ && memcmp (cs_all, cs_prg, sizeof (*cs_all)))
+ {
+ fprintf (stderr, "profiling:%s:Invocation mismatch - some data files may have been removed%s",
+ gi_filename, GCOV_LOCKED
+ ? "" : " or concurrent update without locking support");
+ all.checksum = ~0u;
+ }
+ }
+
+ c_ix = 0;
+ for (t_ix = 0; t_ix < GCOV_COUNTERS; t_ix++)
+ if ((1 << t_ix) & gi_ptr->ctr_mask)
+ {
+ values[c_ix] = gi_ptr->counts[c_ix].values;
+ c_ix++;
+ }
+
+ 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++)
+ {
+ fi_ptr = (const struct gcov_fn_info *)
+ ((const char *) gi_ptr->functions + f_ix * fi_stride);
+
+ /* Announce function. */
+ gcov_write_tag_length (GCOV_TAG_FUNCTION, GCOV_TAG_FUNCTION_LENGTH);
+ gcov_write_unsigned (fi_ptr->ident);
+ gcov_write_unsigned (fi_ptr->lineno_checksum);
+ gcov_write_unsigned (fi_ptr->cfg_checksum);
+
+ c_ix = 0;
+ for (t_ix = 0; t_ix < GCOV_COUNTERS; t_ix++)
+ {
+ gcov_type *c_ptr;
+
+ if (!((1 << t_ix) & gi_ptr->ctr_mask))
+ 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];
+ while (n_counts--)
+ gcov_write_counter (*c_ptr++);
+
+ values[c_ix] = c_ptr;
+ c_ix++;
+ }
+ }
+
+ /* Object file summary. */
+ gcov_write_summary (GCOV_TAG_OBJECT_SUMMARY, &object);
+
+ /* Generate whole program statistics. */
+ if (eof_pos)
+ gcov_seek (eof_pos);
+ gcov_write_summary (GCOV_TAG_PROGRAM_SUMMARY, &program);
+ if (!summary_pos)
+ gcov_write_unsigned (0);
+ if ((error = gcov_close ()))
+ fprintf (stderr, error < 0 ?
+ "profiling:%s:Overflow writing\n" :
+ "profiling:%s:Error writing\n",
+ gi_filename);
+ }
+}
+
+/* Add a new object file onto the bb chain. Invoked automatically
+ when running an object file's global ctors. */
+
+void
+__gcov_init (struct gcov_info *info)
+{
+ if (!info->version)
+ return;
+ if (gcov_version (info, info->version, 0))
+ {
+ const char *ptr = info->filename;
+ gcov_unsigned_t crc32 = gcov_crc32;
+ size_t filename_length = strlen(info->filename);
+
+ /* Refresh the longest file name information */
+ if (filename_length > gcov_max_filename)
+ gcov_max_filename = filename_length;
+
+ do
+ {
+ unsigned ix;
+ gcov_unsigned_t value = *ptr << 24;
+
+ for (ix = 8; ix--; value <<= 1)
+ {
+ gcov_unsigned_t feedback;
+
+ feedback = (value ^ crc32) & 0x80000000 ? 0x04c11db7 : 0;
+ crc32 <<= 1;
+ crc32 ^= feedback;
+ }
+ }
+ while (*ptr++);
+
+ gcov_crc32 = crc32;
+
+ if (!gcov_list)
+ atexit (gcov_exit);
+
+ info->next = gcov_list;
+ gcov_list = info;
+ }
+ info->version = 0;
+}
+
+/* Called before fork or exec - write out profile information gathered so
+ far and reset it to zero. This avoids duplication or loss of the
+ profile information gathered so far. */
+
+void
+__gcov_flush (void)
+{
+ const struct gcov_info *gi_ptr;
+
+ gcov_exit ();
+ for (gi_ptr = gcov_list; gi_ptr; gi_ptr = gi_ptr->next)
+ {
+ 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)
+ {
+ memset (ci_ptr->values, 0, sizeof (gcov_type) * ci_ptr->num);
+ ci_ptr++;
+ }
+ }
+}
+
+#endif /* L_gcov */
+
+#ifdef L_gcov_merge_add
+/* 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_add (gcov_type *counters, unsigned n_counters)
+{
+ for (; n_counters; counters++, n_counters--)
+ *counters += gcov_read_counter ();
+}
+#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 */
+void
+__gcov_merge_single (gcov_type *counters, unsigned n_counters)
+{
+ unsigned i, n_measures;
+ gcov_type value, counter, all;
+
+ gcc_assert (!(n_counters % 3));
+ n_measures = n_counters / 3;
+ for (i = 0; i < n_measures; i++, counters += 3)
+ {
+ value = gcov_read_counter ();
+ counter = gcov_read_counter ();
+ all = gcov_read_counter ();
+
+ if (counters[0] == value)
+ counters[1] += counter;
+ else if (counter > counters[1])
+ {
+ counters[0] = value;
+ counters[1] = counter - counters[1];
+ }
+ else
+ counters[1] -= counter;
+ counters[2] += all;
+ }
+}
+#endif /* L_gcov_merge_single */
+
+#ifdef L_gcov_merge_delta
+/* The profile merging function for choosing the most common
+ difference between two consecutive evaluations of the 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 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
+ -- total number of evaluations of the value */
+void
+__gcov_merge_delta (gcov_type *counters, unsigned n_counters)
+{
+ unsigned i, n_measures;
+ 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 ();
+ value = gcov_read_counter ();
+ counter = gcov_read_counter ();
+ all = gcov_read_counter ();
+
+ if (counters[1] == value)
+ counters[2] += counter;
+ else if (counter > counters[2])
+ {
+ counters[1] = value;
+ counters[2] = counter - counters[2];
+ }
+ else
+ counters[2] -= counter;
+ counters[3] += all;
+ }
+}
+#endif /* L_gcov_merge_delta */
+
+#ifdef L_gcov_interval_profiler
+/* If VALUE is in interval <START, START + STEPS - 1>, then increases the
+ corresponding counter in COUNTERS. If the VALUE is above or below
+ the interval, COUNTERS[STEPS] or COUNTERS[STEPS + 1] is increased
+ instead. */
+
+void
+__gcov_interval_profiler (gcov_type *counters, gcov_type value,
+ int start, unsigned steps)
+{
+ gcov_type delta = value - start;
+ if (delta < 0)
+ counters[steps + 1]++;
+ else if (delta >= steps)
+ counters[steps]++;
+ else
+ counters[delta]++;
+}
+#endif
+
+#ifdef L_gcov_pow2_profiler
+/* If VALUE is a power of two, COUNTERS[1] is incremented. Otherwise
+ COUNTERS[0] is incremented. */
+
+void
+__gcov_pow2_profiler (gcov_type *counters, gcov_type value)
+{
+ if (value & (value - 1))
+ counters[0]++;
+ else
+ counters[1]++;
+}
+#endif
+
+/* 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,
+ COUNTERS[1] is decremented. Otherwise COUNTERS[1] is set to one and
+ VALUE is stored to COUNTERS[0]. This algorithm guarantees that if this
+ function is called more than 50% of the time with one value, this value
+ will be in COUNTERS[0] in the end.
+
+ In any case, COUNTERS[2] is incremented. */
+
+static inline void
+__gcov_one_value_profiler_body (gcov_type *counters, gcov_type value)
+{
+ if (value == counters[0])
+ counters[1]++;
+ else if (counters[1] == 0)
+ {
+ counters[1] = 1;
+ counters[0] = value;
+ }
+ else
+ 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
+
+/* 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,
+ 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
+ || (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
+/* A wrapper for the fork function. Flushes the accumulated profiling data, so
+ that they are not counted twice. */
+
+pid_t
+__gcov_fork (void)
+{
+ __gcov_flush ();
+ return fork ();
+}
+#endif
+
+#ifdef L_gcov_execl
+/* A wrapper for the execl function. Flushes the accumulated profiling data, so
+ that they are not lost. */
+
+int
+__gcov_execl (const char *path, char *arg, ...)
+{
+ va_list ap, aq;
+ unsigned i, length;
+ char **args;
+
+ __gcov_flush ();
+
+ va_start (ap, arg);
+ va_copy (aq, ap);
+
+ length = 2;
+ while (va_arg (ap, char *))
+ length++;
+ va_end (ap);
+
+ args = (char **) alloca (length * sizeof (void *));
+ args[0] = arg;
+ for (i = 1; i < length; i++)
+ args[i] = va_arg (aq, char *);
+ va_end (aq);
+
+ return execv (path, args);
+}
+#endif
+
+#ifdef L_gcov_execlp
+/* A wrapper for the execlp function. Flushes the accumulated profiling data, so
+ that they are not lost. */
+
+int
+__gcov_execlp (const char *path, char *arg, ...)
+{
+ va_list ap, aq;
+ unsigned i, length;
+ char **args;
+
+ __gcov_flush ();
+
+ va_start (ap, arg);
+ va_copy (aq, ap);
+
+ length = 2;
+ while (va_arg (ap, char *))
+ length++;
+ va_end (ap);
+
+ args = (char **) alloca (length * sizeof (void *));
+ args[0] = arg;
+ for (i = 1; i < length; i++)
+ args[i] = va_arg (aq, char *);
+ va_end (aq);
+
+ return execvp (path, args);
+}
+#endif
+
+#ifdef L_gcov_execle
+/* A wrapper for the execle function. Flushes the accumulated profiling data, so
+ that they are not lost. */
+
+int
+__gcov_execle (const char *path, char *arg, ...)
+{
+ va_list ap, aq;
+ unsigned i, length;
+ char **args;
+ char **envp;
+
+ __gcov_flush ();
+
+ va_start (ap, arg);
+ va_copy (aq, ap);
+
+ length = 2;
+ while (va_arg (ap, char *))
+ length++;
+ va_end (ap);
+
+ args = (char **) alloca (length * sizeof (void *));
+ args[0] = arg;
+ for (i = 1; i < length; i++)
+ args[i] = va_arg (aq, char *);
+ envp = va_arg (aq, char **);
+ va_end (aq);
+
+ return execve (path, args, envp);
+}
+#endif
+
+#ifdef L_gcov_execv
+/* A wrapper for the execv function. Flushes the accumulated profiling data, so
+ that they are not lost. */
+
+int
+__gcov_execv (const char *path, char *const argv[])
+{
+ __gcov_flush ();
+ return execv (path, argv);
+}
+#endif
+
+#ifdef L_gcov_execvp
+/* A wrapper for the execvp function. Flushes the accumulated profiling data, so
+ that they are not lost. */
+
+int
+__gcov_execvp (const char *path, char *const argv[])
+{
+ __gcov_flush ();
+ return execvp (path, argv);
+}
+#endif
+
+#ifdef L_gcov_execve
+/* A wrapper for the execve function. Flushes the accumulated profiling data, so
+ that they are not lost. */
+
+int
+__gcov_execve (const char *path, char *const argv[], char *const envp[])
+{
+ __gcov_flush ();
+ return execve (path, argv, envp);
+}
+#endif
+#endif /* inhibit_libc */
projects / gcc.git / commitdiff