1 files changed, 97 insertions, 0 deletions
diff --git a/glibc-compat/oldstdfiles.c b/glibc-compat/oldstdfiles.c
new file mode 100644
index 0000000000..e9c992b943
--- /dev/null
+++ b/glibc-compat/oldstdfiles.c
@@ -0,0 +1,97 @@
+/* Copyright (C) 1993, 1994, 1996, 1997 Free Software Foundation, Inc.
+   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 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.
+
+   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
+   for C code.  Compare stdstreams.cc.
+   (The difference is that here the vtable field is set to 0,
+   so the objects defined are not valid C++ objects.  On the other
+   hand, we don't need a C++ compiler to build this file.) */
+
+#define _IO_USE_OLD_IO_FILE
+#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_old_file_jumps};
+#else
+#define DEF_STDFILE(NAME, FD, CHAIN, FLAGS) \
+  struct _IO_FILE_plus NAME \
+    = {FILEBUF_LITERAL(CHAIN, FLAGS, FD), &_IO_old_file_jumps};
+#endif
+
+DEF_STDFILE(_IO_stdin_, 0, 0, _IO_NO_WRITES);
+DEF_STDFILE(_IO_stdout_, 1, &_IO_stdin_.file, _IO_NO_READS);
+DEF_STDFILE(_IO_stderr_, 2, &_IO_stdout_.file,
+	    _IO_NO_READS+_IO_UNBUFFERED);
+
+#if defined __GNUC__ && __GNUC__ >= 2
+
+#include <stdio.h>
+
+extern const int _IO_stdin_used;
+weak_extern (_IO_stdin_used);
+
+#undef stdin
+#undef stdout
+#undef stderr
+
+extern FILE *stdin;
+extern FILE *stdout;
+extern FILE *stderr;
+
+#ifdef SHARED
+extern
+#endif
+FILE *_IO_list_all;
+
+static void _IO_check_libio (void) __attribute__ ((constructor));
+
+/* This function determines which shared C library the application
+   was linked against. We then set up the stdin/stdout/stderr and
+   _IO_list_all accordingly. */
+
+static void
+_IO_check_libio ()
+{
+#ifdef SHARED
+  if (&_IO_stdin_used == NULL)
+#endif
+    {
+      /* We are using the old one. */
+      _IO_stdin = stdin = &_IO_stdin_.file;
+      _IO_stdout = stdout = &_IO_stdout_.file;
+      _IO_stderr = stderr = _IO_list_all = &_IO_stderr_.file;
+      _IO_stdin->_vtable_offset = _IO_stdout->_vtable_offset =
+	_IO_stderr->_vtable_offset = stdin->_vtable_offset =
+	stdout->_vtable_offset = stderr->_vtable_offset =
+	((int) sizeof (struct _IO_FILE)
+	 - (int) sizeof (struct _IO_FILE_complete));
+    }
+}
+
+#endif