Andrew Pinski dixit:
>> which seems to work, but I'm really concerned about the manuals
>> warning of the input and output operads being in seperate places.
> static __inline__ void atomic_inc(atomic_t *v)
> {
> __asm__ __volatile__("addql #1,%0" : "+m" (*v));
> }
Hi, I have got the same problem with the following file:
/* $OpenBSD: _atomic_lock.c,v 1.7 2002/10/11 19:08:41 marc Exp $ */
/* David Leonard, <[EMAIL PROTECTED]>. Public domain. */
/*
* Atomic lock for i386
*/
#include "spinlock.h"
int
_atomic_lock(volatile _spinlock_lock_t *lock)
{
_spinlock_lock_t old;
/*
* Use the eXCHanGe instruction to swap the lock value with
* a local variable containing the locked state.
*/
old = _SPINLOCK_LOCKED;
__asm__("xchg %0,%1"
: "=r" (old), "=m" (*lock)
: "0" (old), "1" (*lock));
return (old != _SPINLOCK_UNLOCKED);
}
Thanks in advance,
//mirabile
--
> [...] Echtzeit hat weniger mit "Speed"[...] zu tun, sondern damit, daß der
> richtige Prozeß voraussagbar rechtzeitig sein Zeitscheibchen bekommt.
Wir haben uns[...] geeinigt, dass das verwendete Echtzeit-Betriebssystem[...]
weil selbst einfachste Operationen *echt* *Zeit* brauchen. (aus d.a.s.r)
