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