Check in gcc sources for prebuilt toolchains in Eclair.

1 files changed, 90 insertions, 0 deletions

diff --git a/gcc-4.3.1/gcc/config/vxlib.c b/gcc-4.3.1/gcc/config/vxlib.c
new file mode 100644
index 000000000..2c6a5c086
--- /dev/null
+++ b/gcc-4.3.1/gcc/config/vxlib.c
@@ -0,0 +1,90 @@
+/* Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+   Contributed by Zack Weinberg <zack@codesourcery.com>
+
+This file is part of GCC.
+
+GCC 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.
+
+GCC 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 GCC; see the file COPYING.  If not, write to the Free
+Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301, USA.  */
+
+/* As a special exception, if you link this library with other files,
+   some of which are compiled with GCC, to produce an executable,
+   this library does not by itself 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.  */
+
+/* Threads compatibility routines for libgcc2 for VxWorks.
+   These are out-of-line routines called from gthr-vxworks.h.  */
+
+#include "tconfig.h"
+#include "tsystem.h"
+#include "gthr.h"
+
+#if defined(__GTHREADS)
+#include <vxWorks.h>
+#ifndef __RTP__
+#include <vxLib.h>
+#endif
+#include <taskLib.h>
+#ifndef __RTP__
+#include <taskHookLib.h>
+#else
+# include <errno.h>
+#endif
+
+/* Init-once operation.
+
+   This would be a clone of the implementation from gthr-solaris.h,
+   except that we have a bootstrap problem - the whole point of this
+   exercise is to prevent double initialization, but if two threads
+   are racing with each other, once->mutex is liable to be initialized
+   by both.  Then each thread will lock its own mutex, and proceed to
+   call the initialization routine.
+
+   So instead we use a bare atomic primitive (vxTas()) to handle
+   mutual exclusion.  Threads losing the race then busy-wait, calling
+   taskDelay() to yield the processor, until the initialization is
+   completed.  Inefficient, but reliable.  */
+
+int
+__gthread_once (__gthread_once_t *guard, void (*func)(void))
+{
+  if (guard->done)
+    return 0;
+
+#ifdef __RTP__
+  __gthread_lock_library ();
+#else
+  while (!vxTas ((void *)&guard->busy))
+    taskDelay (1);
+#endif
+
+  /* Only one thread at a time gets here.  Check ->done again, then
+     go ahead and call func() if no one has done it yet.  */
+  if (!guard->done)
+    {
+      func ();
+      guard->done = 1;
+    }
+
+#ifdef __RTP__
+  __gthread_unlock_library ();
+#else
+  guard->busy = 0;
+#endif
+  return 0;
+}
+
+#endif /* __GTHREADS */