2 files changed, 112 insertions, 0 deletions
diff --git a/libatomic/config/nvptx/host-config.h b/libatomic/config/nvptx/host-config.h
new file mode 100644
index 0000000..eb9de81
--- /dev/null
+++ b/libatomic/config/nvptx/host-config.h
@@ -0,0 +1,56 @@
+/* Copyright (C) 2020 Free Software Foundation, Inc.
+
+   This file is part of the GNU Atomic Library (libatomic).
+
+   Libatomic 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 of the License, or
+   (at your option) any later version.
+
+   Libatomic 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/>.  */
+
+/* Copied from libatomic/config/posix/host-config.h.  */
+
+/* Included after all more target-specific host-config.h.  */
+
+
+#ifndef protect_start_end
+# ifdef HAVE_ATTRIBUTE_VISIBILITY
+#  pragma GCC visibility push(hidden)
+# endif
+
+void libat_lock_1 (void *ptr);
+void libat_unlock_1 (void *ptr);
+
+static inline UWORD
+protect_start (void *ptr)
+{
+  libat_lock_1 (ptr);
+  return 0;
+}
+
+static inline void
+protect_end (void *ptr, UWORD dummy UNUSED)
+{
+  libat_unlock_1 (ptr);
+}
+
+# define protect_start_end 1
+# ifdef HAVE_ATTRIBUTE_VISIBILITY
+#  pragma GCC visibility pop
+# endif
+#endif /* protect_start_end */
+
+#include_next <host-config.h>
diff --git a/libatomic/config/nvptx/lock.c b/libatomic/config/nvptx/lock.c
new file mode 100644
index 0000000..dea85a3
--- /dev/null
+++ b/libatomic/config/nvptx/lock.c
@@ -0,0 +1,56 @@
+/* Copyright (C) 2020 Free Software Foundation, Inc.
+
+   This file is part of the GNU Atomic Library (libatomic).
+
+   Libatomic 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 of the License, or
+   (at your option) any later version.
+
+   Libatomic 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/>.  */
+
+/* Functions libat_lock_n/libat_unlock_n based on GOMP_atomic_start/end in
+   libgomp/atomic.c.  */
+
+#include "libatomic_i.h"
+
+static int atomic_lock;
+
+void
+libat_lock_n (void *ptr __attribute__((unused)),
+	      size_t n __attribute__((unused)))
+{
+  while (__sync_lock_test_and_set (&atomic_lock, 1))
+    ;  /* Spin.  */
+}
+
+void
+libat_unlock_n (void *ptr __attribute__((unused)),
+		size_t n __attribute__((unused)))
+{
+  __sync_lock_release (&atomic_lock);
+}
+
+void
+libat_lock_1 (void *ptr)
+{
+  libat_lock_n (ptr, 1);
+}
+
+void
+libat_unlock_1 (void *ptr)
+{
+  libat_unlock_n (ptr, 1);
+}