Insert libio rewrite and its various changes from devo.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@15129 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 27 insertions, 20 deletions

diff --git a/libio/stdfiles.c b/libio/stdfiles.c
index 1d0ef85be90..8453e33c34c 100644
--- a/libio/stdfiles.c
+++ b/libio/stdfiles.c
@@ -1,26 +1,27 @@
-/* 
-Copyright (C) 1993, 1994 Free Software Foundation
+/* Copyright (C) 1993, 1994, 1996, 1997 Free Software Foundation, Inc.
+   This file is part of the GNU IO Library.
 
-This file is part of the GNU IO Library.  This library 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 version.
+   This library 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 version.
 
-This library 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.
+   This library 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 this library; see the file COPYING.  If not, write to the Free
-Software Foundation, 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+   You should have received a copy of the GNU General Public License
+   along with this library; see the file COPYING.  If not, write to
+   the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
+   MA 02111-1307, USA.
 
-As a special exception, if you link this library with files
-compiled with a GNU compiler to produce an executable, this does not cause
-the resulting executable to be covered by the GNU General Public License.
-This exception does not however invalidate any other reasons why
-the executable file might be covered by the GNU General Public License. */
+   As a special exception, if you link this library with files
+   compiled with a GNU compiler to produce an executable, this does
+   not cause the resulting executable to be covered by the GNU General
+   Public License.  This exception does not however invalidate any
+   other reasons why the executable file might be covered by the GNU
+   General Public License.  */
 
 
 /* This file provides definitions of _IO_stdin, _IO_stdout, and _IO_stderr
@@ -31,10 +32,16 @@ the executable file might be covered by the GNU General Public License. */
 
 #include "libioP.h"
 
-
+#ifdef _IO_MTSAFE_IO
+#define DEF_STDFILE(NAME, FD, CHAIN, FLAGS) \
+  static _IO_lock_t _IO_stdfile_##FD##_lock = _IO_lock_initializer; \
+  struct _IO_FILE_plus NAME \
+    = {FILEBUF_LITERAL(CHAIN, FLAGS, FD), &_IO_file_jumps}
+#else
 #define DEF_STDFILE(NAME, FD, CHAIN, FLAGS) \
   struct _IO_FILE_plus NAME \
     = {FILEBUF_LITERAL(CHAIN, FLAGS, FD), &_IO_file_jumps}
+#endif
 
 DEF_STDFILE(_IO_stdin_, 0, 0, _IO_NO_WRITES);
 DEF_STDFILE(_IO_stdout_, 1, &_IO_stdin_.file, _IO_NO_READS);