1/*  bb_exit_func.c - dumps all the basic-block statistics linked into
2    the bb_head chain to .d files.
3
4   Copyright (C) 2000-2017 Free Software Foundation, Inc.
5
6   This file is part of GNU Binutils.
7
8   This program is free software; you can redistribute it and/or modify
9   it under the terms of the GNU General Public License as published by
10   the Free Software Foundation; either version 3 of the License, or
11   (at your option) any later version.
12
13   This program is distributed in the hope that it will be useful,
14   but WITHOUT ANY WARRANTY; without even the implied warranty of
15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16   GNU General Public License for more details.
17
18   You should have received a copy of the GNU General Public License
19   along with this program; if not, write to the Free Software
20   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
21   02110-1301, USA.
22
23   This code was contributed by:
24
25     David Mosberger-Tang <David.Mosberger@acm.org>  */
26
27#include <stdio.h>
28#include <strings.h>
29#include "bfd.h"
30#include "gmon_out.h"
31
32/* structure emitted by -a */
33struct bb
34{
35  long zero_word;
36  const char *filename;
37  long *counts;
38  long ncounts;
39  struct bb *next;
40  const unsigned long *addresses;
41};
42
43struct bb *__bb_head = (struct bb *) 0;
44
45
46void
47__bb_exit_func ()
48{
49  const int version = GMON_VERSION;
50  struct gmon_hdr ghdr;
51  struct bb *ptr;
52  FILE *fp;
53  /* GEN_GMON_CNT_FILE should be defined on systems with mcleanup()
54     functions that do not write basic-block to gmon.out.  In such
55     cases profiling with "-pg -a" would result in a gmon.out file
56     without basic-block info (because the file written here would be
57     overwritten.  Thus, a separate file is generated instead.  The
58     two files can easily be combined by specifying them on gprof's
59     command line (and possibly generating a gmon.sum file with "gprof
60     -s"). */
61#ifndef GEN_GMON_CNT_FILE
62#   define OUT_NAME	"gmon.out"
63#else
64#   define OUT_NAME	"gmon.cnt"
65#endif
66  fp = fopen (OUT_NAME, "wb");
67  if (!fp)
68    {
69      perror (OUT_NAME);
70      return;
71    }
72  memcpy (&ghdr.cookie[0], GMON_MAGIC, 4);
73  memcpy (&ghdr.version, &version, sizeof (version));
74  fwrite (&ghdr, sizeof (ghdr), 1, fp);
75
76  for (ptr = __bb_head; ptr != 0; ptr = ptr->next)
77    {
78      u_int ncounts = ptr->ncounts;
79      u_char tag;
80      u_int i;
81
82      tag = GMON_TAG_BB_COUNT;
83      fwrite (&tag, sizeof (tag), 1, fp);
84      fwrite (&ncounts, sizeof (ncounts), 1, fp);
85
86      for (i = 0; i < ncounts; ++i)
87	{
88	  fwrite (&ptr->addresses[i], sizeof (ptr->addresses[0]), 1, fp);
89	  fwrite (&ptr->counts[i], sizeof (ptr->counts[0]), 1, fp);
90	}
91    }
92  fclose (fp);
93}
94