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63 lines
2.3 KiB
C
63 lines
2.3 KiB
C
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/*
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* Copyright (c) 2003 Hewlett-Packard Development Company, L.P.
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* Copyright (c) 2009-2017 Ivan Maidanski
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef AO_ASSUME_WINDOWS98
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/* CAS is always available */
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# define AO_ASSUME_WINDOWS98
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#endif
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#include "common32_defs.h"
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#include "../test_and_set_t_is_ao_t.h"
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/* AO_test_and_set_full() is emulated using CAS. */
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/* Some ARM slide set, if it has been read correctly, claims that Loads */
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/* followed by either a Load or a Store are ordered, but nothing else. */
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/* It is assumed that Windows interrupt handlers clear the LL/SC flag. */
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/* Unaligned accesses are not guaranteed to be atomic. */
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#include "../all_aligned_atomic_load_store.h"
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/* If only a single processor is used, we can define AO_UNIPROCESSOR. */
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#ifdef AO_UNIPROCESSOR
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AO_INLINE void AO_nop_full(void)
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{
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AO_compiler_barrier();
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}
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# define AO_HAVE_nop_full
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#else
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/* AO_nop_full() is emulated using AO_test_and_set_full(). */
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#endif
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#if _M_ARM >= 6
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/* ARMv6 is the first architecture providing support for simple LL/SC. */
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/* #include "../standard_ao_double_t.h" */
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/* TODO: implement double-wide operations (similar to x86). */
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#else /* _M_ARM < 6 */
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/* TODO: implement AO_test_and_set_full using SWP. */
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#endif /* _M_ARM < 6 */
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#define AO_T_IS_INT
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