1/****************************************************************************
2 ****************************************************************************
3 ***
4 ***   This header was automatically generated from a Linux kernel header
5 ***   of the same name, to make information necessary for userspace to
6 ***   call into the kernel available to libc.  It contains only constants,
7 ***   structures, and macros generated from the original header, and thus,
8 ***   contains no copyrightable information.
9 ***
10 ****************************************************************************
11 ****************************************************************************/
12#ifndef __ASM_SH_ATOMIC_H
13#define __ASM_SH_ATOMIC_H
14
15typedef struct { volatile int counter; } atomic_t;
16
17#define ATOMIC_INIT(i) ( (atomic_t) { (i) } )
18
19#define atomic_read(v) ((v)->counter)
20#define atomic_set(v,i) ((v)->counter = (i))
21
22#include <linux/compiler.h>
23#include <asm/system.h>
24
25#include <asm/atomic-llsc.h>
26
27#define atomic_add_negative(a, v) (atomic_add_return((a), (v)) < 0)
28
29#define atomic_dec_return(v) atomic_sub_return(1,(v))
30#define atomic_inc_return(v) atomic_add_return(1,(v))
31
32#define atomic_inc_and_test(v) (atomic_inc_return(v) == 0)
33
34#define atomic_sub_and_test(i,v) (atomic_sub_return((i), (v)) == 0)
35#define atomic_dec_and_test(v) (atomic_sub_return(1, (v)) == 0)
36
37#define atomic_inc(v) atomic_add(1,(v))
38#define atomic_dec(v) atomic_sub(1,(v))
39
40#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
41#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
42#define smp_mb__before_atomic_dec() barrier()
43#define smp_mb__after_atomic_dec() barrier()
44#define smp_mb__before_atomic_inc() barrier()
45#define smp_mb__after_atomic_inc() barrier()
46#include <asm-generic/atomic.h>
47#endif
48