/usr/include/xenomai/asm-blackfin/atomic_asm.h is in libxenomai-dev 2.6.4+dfsg-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 64 65 66 67 68 69 70 71 72 73 74 75 76 77 | /*
* Copyright (C) 2012 Philippe Gerum <rpm@xenomai.org>.
*
* Xenomai 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 2 of the License,
* or (at your option) any later version.
*
* Xenomai 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.
*
* You should have received a copy of the GNU General Public License
* along with Xenomai; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#ifndef _XENO_ASM_BLACKFIN_ATOMIC_ASM_H
#define _XENO_ASM_BLACKFIN_ATOMIC_ASM_H
#ifndef _XENO_ASM_BLACKFIN_ATOMIC_H
#error "please don't include asm/atomic_asm.h directly"
#endif
#ifdef __KERNEL__
#include <linux/version.h>
#include <linux/bitops.h>
#include <asm/atomic.h>
#define xnarch_atomic_xchg(ptr,v) xchg(ptr,v)
#define xnarch_memory_barrier() smp_mb()
#define xnarch_read_memory_barrier() rmb()
#define xnarch_write_memory_barrier() wmb()
#define xnarch_atomic_set(pcounter,i) atomic_set(pcounter,i)
#define xnarch_atomic_get(pcounter) atomic_read(pcounter)
#define xnarch_atomic_inc(pcounter) atomic_inc(pcounter)
#define xnarch_atomic_dec(pcounter) atomic_dec(pcounter)
#define xnarch_atomic_inc_and_test(pcounter) atomic_inc_and_test(pcounter)
#define xnarch_atomic_dec_and_test(pcounter) atomic_dec_and_test(pcounter)
#define xnarch_atomic_set_mask(pflags, mask) \
rthal_atomic_set_mask((pflags), (mask))
#define xnarch_atomic_clear_mask(pflags, mask) \
rthal_atomic_clear_mask((pflags), (mask))
#define xnarch_atomic_cmpxchg(pcounter, old, new) \
atomic_cmpxchg((pcounter), (old), (new))
typedef atomic_t atomic_counter_t;
typedef atomic_t xnarch_atomic_t;
typedef unsigned long atomic_flags_t;
#else /* !__KERNEL__ */
#include <asm/xenomai/syscall.h>
static __inline__ unsigned long xnarch_atomic_xchg(unsigned long *ptr, unsigned long x)
{
unsigned long oldval;
XENOMAI_SYSCALL4(__xn_sys_arch,__xn_lsys_xchg,ptr,x,&oldval);
return oldval;
}
#define xnarch_memory_barrier() __asm__ __volatile__("": : :"memory")
#define cpu_relax() xnarch_memory_barrier()
#define xnarch_read_memory_barrier() xnarch_memory_barrier()
#define xnarch_write_memory_barrier() xnarch_memory_barrier()
#endif /* __KERNEL__ */
#endif /* !_XENO_ASM_BLACKFIN_ATOMIC_ASM_H */
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