1 files changed, 56 insertions, 0 deletions
diff --git a/sysdeps/generic/bits/pt-atomic.h b/sysdeps/generic/bits/pt-atomic.h
new file mode 100644
index 0000000..7ef0484
--- /dev/null
+++ b/sysdeps/generic/bits/pt-atomic.h
@@ -0,0 +1,56 @@
+/* Atomic operations.  gcc intrinsics version.
+   Copyright (C) 2016 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_ATOMIC_H
+#define _BITS_ATOMIC_H	1
+
+typedef __volatile int __atomic_t;
+
+static inline void
+__atomic_inc (__atomic_t *__var)
+{
+  __atomic_add_fetch (__var, 1, __ATOMIC_SEQ_CST);
+}
+
+static inline void
+__atomic_dec (__atomic_t *__var)
+{
+  __atomic_add_fetch (__var, -1, __ATOMIC_SEQ_CST);
+}
+
+static inline int
+__atomic_dec_and_test (__atomic_t *__var)
+{
+  __atomic_t res = __atomic_add_fetch (__var, -1, __ATOMIC_SEQ_CST);
+  return res == 0;
+}
+
+#define atomic_loadx(p) __atomic_load_8(p, __ATOMIC_SEQ_CST)
+#define atomic_storex(p, v) __atomic_store_8(p, v, __ATOMIC_SEQ_CST)
+
+static inline char atomic_casx_bool(uint64_t *p,
+    uint32_t elo, uint32_t ehi, uint32_t nlo, uint32_t nhi)
+{
+  uint64_t n = nlo | (((uint64_t) nhi) << 32);
+  uint64_t e = elo | (((uint64_t) ehi) << 32);
+  return __atomic_compare_exchange(p,
+    &e, &n, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST);
+}
+
+#endif