Imported gcc-4.4.3

[msp430-gcc.git] / gcc / gthr-gnat.c

diff --git a/gcc/gthr-gnat.c b/gcc/gthr-gnat.c
new file mode 100644 (file)
index 0000000..4730bd3
--- /dev/null
+++ b/gcc/gthr-gnat.c
@@ -0,0 +1,85 @@
+/* Threads compatibility routines for libgcc2.  */
+/* Compile this one with gcc.  */
+/* Copyright (C) 2003, 2004, 2009 Free Software Foundation, Inc.
+
+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 3, 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.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#include "gthr-gnat.h"
+
+#ifndef HIDE_EXPORTS
+#pragma GCC visibility push(default)
+#endif
+
+#ifdef __cplusplus
+#define UNUSED(x)
+#else
+#define UNUSED(x) x __attribute__((unused))
+#endif
+
+void __gnat_default_lock (void);
+void __gnat_default_unlock (void);
+
+void
+__gnat_default_lock (void)
+{
+  return;
+}
+
+void
+__gnat_default_unlock (void)
+{
+  return;
+}
+
+static void (*__gnat_task_lock) (void) = *__gnat_default_lock;
+static void (*__gnat_task_unlock) (void) = *__gnat_default_unlock;
+
+ void
+__gnat_install_locks (void (*lock) (void), void (*unlock) (void))
+{
+  __gnat_task_lock = lock;
+  __gnat_task_unlock = unlock;
+}
+
+int
+__gthread_active_p (void)
+{
+  return 0;
+}
+
+int
+__gthread_mutex_lock (__gthread_mutex_t * UNUSED (mutex))
+{
+  __gnat_task_lock ();
+  return 0;
+}
+
+int
+__gthread_mutex_unlock (__gthread_mutex_t * UNUSED (mutex))
+{
+  __gnat_task_unlock ();
+  return 0;
+}
+
+#ifndef HIDE_EXPORTS
+#pragma GCC visibility pop
+#endif