/usr/include/atomic_ops/sysdeps/msftc/arm.h is in libatomic-ops-dev 7.4.2-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 | /*
* Copyright (c) 2003 Hewlett-Packard Development Company, L.P.
*
* 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"
/* FIXME: Do _InterlockedOps really have a full memory barrier? */
/* (MSDN WinCE docs say nothing about it.) */
#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
|