diff options
| author | Artur Grabowski <art@cvs.openbsd.org> | 2007-02-06 17:13:34 +0000 |
|---|---|---|
| committer | Artur Grabowski <art@cvs.openbsd.org> | 2007-02-06 17:13:34 +0000 |
| commit | f362ffa3807abff7ddf02a5444837d99e055118c (patch) | |
| tree | fadacf8a1cfbb96801c55e8d68bb13d221849937 /sys/arch/alpha/include | |
| parent | 7db3ee67d9e72670d704be8f59c2fc3c4fe5684a (diff) | |
Add machine/atomic.h to all architectures and define two operations
right now that are supposed to be atomic with respect to interrupts and
SMP: atomic_setbits_int and atomic_clearbits_int.
All architectures other than i386 and amd64 get dummy implementations
since at first we'll be replacing operations that are done with
"a |= bit" and "a &= ~bit" today. More proper implementations will follow
kettenis@, miod@ ok
Diffstat (limited to 'sys/arch/alpha/include')
| -rw-r--r-- | sys/arch/alpha/include/atomic.h | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/sys/arch/alpha/include/atomic.h b/sys/arch/alpha/include/atomic.h index 2588dd34a82..0e9bec993fb 100644 --- a/sys/arch/alpha/include/atomic.h +++ b/sys/arch/alpha/include/atomic.h @@ -1,4 +1,4 @@ -/* $OpenBSD: atomic.h,v 1.3 2002/02/15 15:31:58 art Exp $ */ +/* $OpenBSD: atomic.h,v 1.4 2007/02/06 17:13:33 art Exp $ */ /* $NetBSD: atomic.h,v 1.7 2001/12/17 23:34:57 thorpej Exp $ */ /*- @@ -177,4 +177,16 @@ atomic_loadlatch_ulong(__volatile unsigned long *ulp, unsigned long v) return (v0); } +static __inline void +atomic_setbits_int(__volatile unsigned int *uip, unsigned int v) +{ + *uip |= v; +} + +static __inline void +atomic_clearbits_int(__volatile unsigned int *uip, unsigned int v) +{ + *uip &= ~v; +} + #endif /* _ALPHA_ATOMIC_H_ */ |