diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/librthread/arch/hppa/_atomic_lock.c | 13 | ||||
| -rw-r--r-- | lib/librthread/rthread.h | 13 |
2 files changed, 19 insertions, 7 deletions
diff --git a/lib/librthread/arch/hppa/_atomic_lock.c b/lib/librthread/arch/hppa/_atomic_lock.c index 2b501711715..2b21ee26d9f 100644 --- a/lib/librthread/arch/hppa/_atomic_lock.c +++ b/lib/librthread/arch/hppa/_atomic_lock.c @@ -1,4 +1,4 @@ -/* $OpenBSD: _atomic_lock.c,v 1.3 2005/12/17 05:28:59 marco Exp $ */ +/* $OpenBSD: _atomic_lock.c,v 1.4 2005/12/19 21:30:10 marco Exp $ */ /* * Copyright (c) 2005 Marco Peereboom <marco@openbsd.org> * @@ -18,13 +18,20 @@ #include <machine/spinlock.h> int -_atomic_lock(register volatile _spinlock_lock_t *lock) +_atomic_lock(volatile _spinlock_lock_t *lock) { _spinlock_lock_t old; +#ifdef DIAGNOSTIC + if ((unsigned long)lock & 0xf) { + printf("lock not 16 byte aligned\n"); + abort(); + } +#endif + asm volatile ("ldcw %1,%0" : "=r" (old), "=m" (*lock) : "m" (*lock)); - return (old == _SPINLOCK_UNLOCKED); + return (old == _SPINLOCK_LOCKED); } diff --git a/lib/librthread/rthread.h b/lib/librthread/rthread.h index 96596cce16a..6da13075dfd 100644 --- a/lib/librthread/rthread.h +++ b/lib/librthread/rthread.h @@ -1,4 +1,4 @@ -/* $OpenBSD: rthread.h,v 1.8 2005/12/19 06:47:40 tedu Exp $ */ +/* $OpenBSD: rthread.h,v 1.9 2005/12/19 21:30:10 marco Exp $ */ /* * Copyright (c) 2004,2005 Ted Unangst <tedu@openbsd.org> * All Rights Reserved. @@ -19,6 +19,10 @@ * Private data structures that back up the typedefs in pthread.h. * Since only the thread library cares about their size or arrangement, * it should be possible to switch libraries without relinking. + * + * Do not reorder _spinlock_lock_t and sem_t variables in the structs. + * This is due to alignment requirements of certain arches like hppa. + * The current requirement is 16 bytes. */ struct stack { @@ -28,9 +32,10 @@ struct stack { }; typedef struct semaphore { + _spinlock_lock_t lock; volatile int waitcount; volatile int value; - _spinlock_lock_t lock; + int pad; } *sem_t; struct pthread_mutex { @@ -53,10 +58,10 @@ struct pthread_cond_attr { }; struct pthread_rwlock { + struct semaphore sem; _spinlock_lock_t lock; int readers; int writer; - struct semaphore sem; }; struct pthread_rwlockattr { @@ -91,8 +96,8 @@ struct rthread_cleanup_fn { }; struct pthread { - pid_t tid; struct semaphore donesem; + pid_t tid; unsigned int flags; void *retval; void *(*fn)(void *); |