-/* Copyright (C) 2002-2003 Free Software Foundation, Inc.
+/* Copyright (C) 2002-2003, 2005, 2007, 2009, 2011
+ Free Software Foundation, Inc.
Contributed by Andy Vaught and Paul Brook <paul@nowt.org>
-This file is part of the GNU Fortran 95 runtime library (libgfor).
+This file is part of the GNU Fortran runtime library (libgfortran).
-Libgfor is free software; you can redistribute it and/or modify
+Libgfortran 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)
+the Free Software Foundation; either version 3, or (at your option)
any later version.
-Libgfor is distributed in the hope that it will be useful,
+Libgfortran 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 libgfor; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, 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.
-#include <stdio.h>
+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 "libgfortran.h"
#include <stdlib.h>
#include <string.h>
-#include <math.h>
-#include <stddef.h>
+#include <limits.h>
-#include "libgfortran.h"
-/* This is the offset (in bytes) required to cast from logical(8)* to
- logical(4)*. and still get the same result. Will be 0 for little-endian
- machines and 4 for big-endian machines. */
-int l8_to_l4_offset;
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+/* Stupid function to be sure the constructor is always linked in, even
+ in the case of static linking. See PR libfortran/22298 for details. */
+void
+stupid_function_name_for_static_linking (void)
+{
+ return;
+}
+
+/* This will be 0 for little-endian
+ machines and 1 for big-endian machines. */
+int big_endian = 0;
/* Figure out endianness for this machine. */
-#define detetmine_endianness prefix(determine_endianness)
static void
determine_endianness (void)
{
u.l8 = 1;
if (u.l4[0])
- l8_to_l4_offset = 0;
+ big_endian = 0;
else if (u.l4[1])
- l8_to_l4_offset = 1;
+ big_endian = 1;
else
runtime_error ("Unable to determine machine endianness");
}
static int argc_save;
static char **argv_save;
+static const char *exe_path;
+static int please_free_exe_path_when_done;
+
+/* Save the path under which the program was called, for use in the
+ backtrace routines. */
+void
+store_exe_path (const char * argv0)
+{
+#ifndef PATH_MAX
+#define PATH_MAX 1024
+#endif
+
+#ifndef DIR_SEPARATOR
+#define DIR_SEPARATOR '/'
+#endif
+
+ char buf[PATH_MAX], *cwd, *path;
+
+ /* This can only happen if store_exe_path is called multiple times. */
+ if (please_free_exe_path_when_done)
+ free ((char *) exe_path);
+
+ /* Reading the /proc/self/exe symlink is Linux-specific(?), but if
+ it works it gives the correct answer. */
+#ifdef HAVE_READLINK
+ int len;
+ if ((len = readlink ("/proc/self/exe", buf, sizeof (buf) - 1)) != -1)
+ {
+ buf[len] = '\0';
+ exe_path = strdup (buf);
+ please_free_exe_path_when_done = 1;
+ return;
+ }
+#endif
+
+ /* On the simulator argv is not set. */
+ if (argv0 == NULL || argv0[0] == '/')
+ {
+ exe_path = argv0;
+ please_free_exe_path_when_done = 0;
+ return;
+ }
+
+ memset (buf, 0, sizeof (buf));
+#ifdef HAVE_GETCWD
+ cwd = getcwd (buf, sizeof (buf));
+#else
+ cwd = "";
+#endif
+
+ /* exe_path will be cwd + "/" + argv[0] + "\0". This will not work
+ if the executable is not in the cwd, but at this point we're out
+ of better ideas. */
+ size_t pathlen = strlen (cwd) + 1 + strlen (argv0) + 1;
+ path = malloc (pathlen);
+ snprintf (path, pathlen, "%s%c%s", cwd, DIR_SEPARATOR, argv0);
+ exe_path = path;
+ please_free_exe_path_when_done = 1;
+}
+
+
+/* Return the full path of the executable. */
+char *
+full_exe_path (void)
+{
+ return (char *) exe_path;
+}
+
+
+char *addr2line_path;
+
+/* Find addr2line and store the path. */
+
+void
+find_addr2line (void)
+{
+#ifdef HAVE_ACCESS
+#define A2L_LEN 10
+ char *path = getenv ("PATH");
+ size_t n = strlen (path);
+ char ap[n + 1 + A2L_LEN];
+ size_t ai = 0;
+ for (size_t i = 0; i < n; i++)
+ {
+ if (path[i] != ':')
+ ap[ai++] = path[i];
+ else
+ {
+ ap[ai++] = '/';
+ memcpy (ap + ai, "addr2line", A2L_LEN);
+ if (access (ap, R_OK|X_OK) == 0)
+ {
+ addr2line_path = strdup (ap);
+ return;
+ }
+ else
+ ai = 0;
+ }
+ }
+#endif
+}
+
+
/* Set the saved values of the command line arguments. */
void
{
argc_save = argc;
argv_save = argv;
+ store_exe_path (argv[0]);
}
+iexport(set_args);
+
/* Retrieve the saved values of the command line arguments. */
void
get_args (int *argc, char ***argv)
{
-
*argc = argc_save;
*argv = argv_save;
}
init_variables ();
init_units ();
+ set_fpu ();
+ init_compile_options ();
#ifdef DEBUG
/* Check for special command lines. */
if (argc > 1 && strcmp (argv[1], "--help") == 0)
show_variables ();
-/* if (argc > 1 && strcmp(argv[1], "--resume") == 0) resume(); */
+ /* if (argc > 1 && strcmp(argv[1], "--resume") == 0) resume(); */
#endif
- memory_init ();
+ if (options.backtrace == 1)
+ find_addr2line ();
+
+ random_seed_i4 (NULL, NULL, NULL);
}
/* Cleanup the runtime library. */
static void __attribute__((destructor))
-cleanup ()
+cleanup (void)
{
close_units ();
-}
+
+ if (please_free_exe_path_when_done)
+ free ((char *) exe_path);
+ free (addr2line_path);
+}