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-rw-r--r--gcc-4.8.1/libatomic/store_n.c112
1 files changed, 0 insertions, 112 deletions
diff --git a/gcc-4.8.1/libatomic/store_n.c b/gcc-4.8.1/libatomic/store_n.c
deleted file mode 100644
index 062c01415..000000000
--- a/gcc-4.8.1/libatomic/store_n.c
+++ /dev/null
@@ -1,112 +0,0 @@
-/* Copyright (C) 2012-2013 Free Software Foundation, Inc.
- Contributed by Richard Henderson <rth@redhat.com>.
-
- 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/>. */
-
-#include "libatomic_i.h"
-
-
-/* If we support the builtin, just use it. */
-#if !DONE && SIZE(HAVE_ATOMIC_LDST)
-void
-SIZE(libat_store) (UTYPE *mptr, UTYPE newval, int smodel)
-{
- if (maybe_specialcase_relaxed(smodel))
- __atomic_store_n (mptr, newval, __ATOMIC_RELAXED);
- else if (maybe_specialcase_acqrel(smodel))
- /* Note that ACQ and ACQ_REL are not valid for store. */
- __atomic_store_n (mptr, newval, __ATOMIC_RELEASE);
- else
- __atomic_store_n (mptr, newval, __ATOMIC_SEQ_CST);
-}
-
-#define DONE 1
-#endif /* HAVE_ATOMIC_STORE */
-
-/* If we have compare-and-swap, use it perform the store. */
-#if !DONE && defined(atomic_compare_exchange_n)
-void
-SIZE(libat_store) (UTYPE *mptr, UTYPE newval, int smodel)
-{
- UTYPE oldval;
-
- pre_barrier (smodel);
-
- oldval = *mptr;
- while (!atomic_compare_exchange_n (mptr, &oldval, newval, true,
- __ATOMIC_RELAXED, __ATOMIC_RELAXED))
- continue;
-
- post_barrier (smodel);
-}
-
-#define DONE 1
-#endif /* atomic_compare_exchange_n */
-
-
-/* If this type is smaller than word-sized, fall back to a word-sized
- compare-and-swap loop. */
-#if !DONE && N < WORDSIZE && defined(atomic_compare_exchange_w)
-void
-SIZE(libat_store) (UTYPE *mptr, UTYPE newval, int smodel)
-{
- UWORD mask, shift, woldval, wnewval, t, *wptr;
-
- pre_barrier (smodel);
-
- wptr = (UWORD *)((uintptr_t)mptr & -WORDSIZE);
- shift = (((uintptr_t)mptr % WORDSIZE) * CHAR_BIT) ^ SIZE(INVERT_MASK);
- mask = SIZE(MASK) << shift;
-
- wnewval = (UWORD)newval << shift;
- woldval = __atomic_load_n (wptr, __ATOMIC_RELAXED);
- do
- {
- t = (woldval & ~mask) | wnewval;
- }
- while (!atomic_compare_exchange_w (wptr, &woldval, t));
-
- post_barrier (smodel);
-}
-
-#define DONE 1
-#endif /* N < WORDSIZE && atomic_compare_exchange_w */
-
-
-/* Otherwise, fall back to some sort of protection mechanism. */
-#if !DONE
-void
-SIZE(libat_store) (UTYPE *mptr, UTYPE newval, int smodel)
-{
- UWORD magic;
-
- pre_seq_barrier (smodel);
- magic = protect_start (mptr);
-
- *mptr = newval;
-
- protect_end (mptr, magic);
- post_seq_barrier (smodel);
-}
-#endif
-
-EXPORT_ALIAS (SIZE(store));