2009-04-08 Thomas Quinot <quinot@adacore.com>

[pf3gnuchains/gcc-fork.git] / gcc / ada / errno.c

diff --git a/gcc/ada/errno.c b/gcc/ada/errno.c
index c1b8ec9..811cbdb 100644 (file)
--- a/gcc/ada/errno.c
+++ b/gcc/ada/errno.c
@@ -1,12 +1,12 @@
 /****************************************************************************
  *                                                                          *
- *                GNU ADA RUN-TIME LIBRARY (GNARL) COMPONENTS               *
+ *                 GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS                 *
  *                                                                          *
  *                                E R R N O                                 *
  *                                                                          *
  *                          C Implementation File                           *
  *                                                                          *
- *           Copyright (C) 1992-2001 Free Software Foundation, Inc.         *
+ *           Copyright (C) 1992-2008, Free Software Foundation, Inc.        *
  *                                                                          *
  * GNAT is free software;  you can  redistribute it  and/or modify it under *
  * terms of the  GNU General Public License as published  by the Free Soft- *
@@ -16,8 +16,8 @@
  * 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  distributed with GNAT;  see file COPYING.  If not, write *
- * to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, *
- * MA 02111-1307, USA.                                                      *
+ * to  the  Free Software Foundation,  51  Franklin  Street,  Fifth  Floor, *
+ * Boston, MA 02110-1301, USA.                                              *
  *                                                                          *
  * As a  special  exception,  if you  link  this file  with other  files to *
  * produce an executable,  this file does not by itself cause the resulting *
@@ -39,17 +39,29 @@
 
 #define _REENTRANT
 #define _THREAD_SAFE
+#define _SGI_MP_SOURCE
+
+#ifdef MaRTE
+
+/* MaRTE OS provides its own implementation of errno related functionality. We
+   want to ensure the use of the MaRTE version for tasking programs (the MaRTE
+   library will not be linked if no tasking constructs are used), so we use the
+   weak symbols mechanism to use the MaRTE version whenever is available. */
+
+#pragma weak __get_errno
+#pragma weak __set_errno
+
+#endif
 
 #include <errno.h>
 int
-__get_errno()
+__get_errno(void)
 {
   return errno;
 }
 
 void
-__set_errno(err)
-     int err;
+__set_errno(int err)
 {
   errno = err;
 }