blob: 9ba0a329bdf613d568caed14f6e2b0185e92519e (
plain)
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
|
/* $OpenBSD: atomic.h,v 1.3 2007/04/05 17:35:11 miod Exp $ */
/* Public Domain */
#ifndef __SH_ATOMIC_H__
#define __SH_ATOMIC_H__
#if defined(_KERNEL)
#include <sh/psl.h>
static __inline void
atomic_setbits_int(__volatile unsigned int *uip, unsigned int v)
{
unsigned int sr;
__asm__ __volatile__ ("stc sr, %0" : "=r"(sr));
__asm__ __volatile__ ("ldc %0, sr" : : "r"(sr | PSL_IMASK));
*uip |= v;
__asm__ __volatile__ ("ldc %0, sr" : : "r"(sr));
}
static __inline void
atomic_clearbits_int(__volatile unsigned int *uip, unsigned int v)
{
unsigned int sr;
__asm__ __volatile__ ("stc sr, %0" : "=r"(sr));
__asm__ __volatile__ ("ldc %0, sr" : : "r"(sr | PSL_IMASK));
*uip &= ~v;
__asm__ __volatile__ ("ldc %0, sr" : : "r"(sr));
}
#endif /* defined(_KERNEL) */
#endif /* __SH_ATOMIC_H__ */
|
