atomicity.h: New file.

	* config/os/irix/bits/atomicity.h: New file.
	* config/os/irix/bits/os_defines.h (_POSIX_SOURCE): Undefine.
	(__off_t): Define.
	(__off64_t): Likewise.
	(__ssize_t): Likewise.
	(_G_USING_THUNKS): Define to zero.

From-SVN: r37128

libstdc++-v3/ChangeLog

+2000-10-29  Mark Mitchell  <mark@codesourcery.com>
+
+	* config/os/irix/bits/atomicity.h: New file.
+	* config/os/irix/bits/os_defines.h (_POSIX_SOURCE): Undefine.
+	(__off_t): Define.
+	(__off64_t): Likewise.
+	(__ssize_t): Likewise.
+	(_G_USING_THUNKS): Define to zero.
+	
 2000-10-28  Mark Mitchell  <mark@codesourcery.com>
 
 	* src/string-inst.cc (basic_string<C>::npos): Explicitly

libstdc++-v3/config/os/irix/bits/atomicity.h

+/* Low-level functions for atomic operations.  IRIX version.
+   Copyright (C) 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _BITS_ATOMICITY_H
+#define _BITS_ATOMICITY_H	1
+
+#include <mutex.h>
+
+typedef unsigned long _Atomic_word;
+
+static inline _Atomic_word
+__attribute__ ((__unused__))
+__exchange_and_add (_Atomic_word* __mem, int __val)
+{
+  return test_then_add (__mem, __val);
+}
+
+
+static inline void
+__attribute__ ((unused))
+__atomic_add (_Atomic_word* __mem, int __val)
+{
+  test_then_add (__mem, __val);
+}
+
+#endif /* atomicity.h */

libstdc++-v3/config/os/irix/bits/os_defines.h

@@ -29,12 +29,28 @@
 
 
 #ifndef _GLIBCPP_OS_DEFINES
-#  define _GLIBCPP_OS_DEFINES
-
+#define _GLIBCPP_OS_DEFINES
 
 /* System-specific #define, typedefs, corrections, etc, go here.  This
    file will come before all others. */
 
+/* We need large file support.  There are two ways to turn it on:
+   by defining either _LARGEFILE64_SOURCE or _SGI_SOURCE.  However,
+   it does not actually work to define only the former, as then
+   <sys/stat.h> is invalid: `st_blocks' is defined to be a macro,
+   but then used as a field name.  So, we have to turn on 
+   _SGI_SOURCE.  That only works if _POSIX_SOURCE is turned off,
+   so we have to explicitly turn it off.  (Some of the libio C files
+   explicitly try to turn it on.)  _SGI_SOURCE is actually turned on 
+   implicitly via the command-line.  */
+#undef _POSIX_SOURCE
+
+#define __off_t off_t
+#define __off64_t off64_t
+#define __ssize_t ssize_t
+
+/* GCC does not use thunks on IRIX.  */
+#define _G_USING_THUNKS 0
 
 #endif