diff options
| author | Artur Grabowski <art@cvs.openbsd.org> | 2007-05-04 12:58:42 +0000 |
|---|---|---|
| committer | Artur Grabowski <art@cvs.openbsd.org> | 2007-05-04 12:58:42 +0000 |
| commit | 202dbd708c78383337cb4e23012236006ec5b3d4 (patch) | |
| tree | 5dc18dd001985fe3a0f32b1b5ced9bc1febfa373 /sys/arch/i386/include | |
| parent | 44edd472c011431a2138ccc1a14a6a7b7d8d53e5 (diff) | |
Implement rw_cas for i386.
It uses a function pointer to choose between the 386 and 486 versions.
The 386 version is not MP safe, but we're not expecting MP support
for 386 cpus.
miod@ ok (and prodding)
Diffstat (limited to 'sys/arch/i386/include')
| -rw-r--r-- | sys/arch/i386/include/lock.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/sys/arch/i386/include/lock.h b/sys/arch/i386/include/lock.h index fe0578a3139..172ed35fdf3 100644 --- a/sys/arch/i386/include/lock.h +++ b/sys/arch/i386/include/lock.h @@ -1,4 +1,4 @@ -/* $OpenBSD: lock.h,v 1.3 2006/03/13 18:42:16 mickey Exp $ */ +/* $OpenBSD: lock.h,v 1.4 2007/05/04 12:58:41 art Exp $ */ /* $NetBSD: lock.h,v 1.1.2.2 2000/05/03 14:40:55 sommerfeld Exp $ */ /*- @@ -117,4 +117,9 @@ __cpu_simple_unlock(__cpu_simple_lock_t *lockp) #endif /* !LOCKDEBUG */ +#ifdef _KERNEL +extern int (*rw_cas_p)(volatile unsigned long *, unsigned long, unsigned long); +#define rw_cas (*rw_cas_p) +#endif + #endif /* _I386_LOCK_H_ */ |