Update.

2000-05-23  Jakub Jelinek  <jakub@redhat.com>

	* sysdeps/i386/fpu/bits/mathinline.h (__sincos, __sincosf,
	__sincosl): Guard with __USE_GNU.

22 files changed, 723 insertions, 116 deletions

diff --git a/linuxthreads/Makefile b/linuxthreads/Makefile
index 6e443631c3..777fb2b408 100644
--- a/linuxthreads/Makefile
+++ b/linuxthreads/Makefile
@@ -35,7 +35,7 @@ extra-libs-others := $(extra-libs)
 libpthread-routines := attr cancel condvar join manager mutex ptfork \
 		       ptlongjmp pthread signals specific errno lockfile \
 		       semaphore spinlock wrapsyscall rwlock pt-machine \
-		       oldsemaphore events getcpuclockid
+		       oldsemaphore events getcpuclockid pspinlock
 
 vpath %.c Examples
 tests = ex1 ex2 ex3 ex4 ex5 ex6 ex7
diff --git a/linuxthreads/cancel.c b/linuxthreads/cancel.c
index 067e3f65ed..a51e8ccfc3 100644
--- a/linuxthreads/cancel.c
+++ b/linuxthreads/cancel.c
@@ -58,14 +58,14 @@ int pthread_cancel(pthread_t thread)
 
   __pthread_lock(&handle->h_lock, NULL);
   if (invalid_handle(handle, thread)) {
-    __pthread_spin_unlock(&handle->h_lock);
+    __pthread_unlock(&handle->h_lock);
     return ESRCH;
   }
 
   th = handle->h_descr;
 
   if (th->p_canceled) {
-    __pthread_spin_unlock(&handle->h_lock);
+    __pthread_unlock(&handle->h_lock);
     return 0;
   }
 
@@ -85,7 +85,7 @@ int pthread_cancel(pthread_t thread)
     th->p_woken_by_cancel = dorestart;
   }
 
-  __pthread_spin_unlock(&handle->h_lock);
+  __pthread_unlock(&handle->h_lock);
 
   /* If the thread has suspended or is about to, then we unblock it by
      issuing a restart, instead of a cancel signal. Otherwise we send
diff --git a/linuxthreads/condvar.c b/linuxthreads/condvar.c
index ab107c1fab..536d88ed05 100644
--- a/linuxthreads/condvar.c
+++ b/linuxthreads/condvar.c
@@ -50,7 +50,7 @@ static int cond_extricate_func(void *obj, pthread_descr th)
 
   __pthread_lock(&cond->__c_lock, self);
   did_remove = remove_from_queue(&cond->__c_waiting, th);
-  __pthread_spin_unlock(&cond->__c_lock);
+  __pthread_unlock(&cond->__c_lock);
 
   return did_remove;
 }
@@ -85,7 +85,7 @@ int pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex)
     enqueue(&cond->__c_waiting, self);
   else
     already_canceled = 1;
-  __pthread_spin_unlock(&cond->__c_lock);
+  __pthread_unlock(&cond->__c_lock);
 
   if (already_canceled) {
     __pthread_set_own_extricate_if(self, 0);
@@ -138,7 +138,7 @@ pthread_cond_timedwait_relative(pthread_cond_t *cond,
     enqueue(&cond->__c_waiting, self);
   else
     already_canceled = 1;
-  __pthread_spin_unlock(&cond->__c_lock);
+  __pthread_unlock(&cond->__c_lock);
 
   if (already_canceled) {
     __pthread_set_own_extricate_if(self, 0);
@@ -155,7 +155,7 @@ pthread_cond_timedwait_relative(pthread_cond_t *cond,
 
     __pthread_lock(&cond->__c_lock, self);
     was_on_queue = remove_from_queue(&cond->__c_waiting, self);
-    __pthread_spin_unlock(&cond->__c_lock);
+    __pthread_unlock(&cond->__c_lock);
 
     if (was_on_queue) {
       __pthread_set_own_extricate_if(self, 0);
@@ -196,7 +196,7 @@ int pthread_cond_signal(pthread_cond_t *cond)
 
   __pthread_lock(&cond->__c_lock, NULL);
   th = dequeue(&cond->__c_waiting);
-  __pthread_spin_unlock(&cond->__c_lock);
+  __pthread_unlock(&cond->__c_lock);
   if (th != NULL) restart(th);
   return 0;
 }
@@ -209,7 +209,7 @@ int pthread_cond_broadcast(pthread_cond_t *cond)
   /* Copy the current state of the waiting queue and empty it */
   tosignal = cond->__c_waiting;
   cond->__c_waiting = NULL;
-  __pthread_spin_unlock(&cond->__c_lock);
+  __pthread_unlock(&cond->__c_lock);
   /* Now signal each process in the queue */
   while ((th = dequeue(&tosignal)) != NULL) restart(th);
   return 0;
diff --git a/linuxthreads/internals.h b/linuxthreads/internals.h
index e41e5d3a72..3790efed3f 100644
--- a/linuxthreads/internals.h
+++ b/linuxthreads/internals.h
@@ -138,7 +138,7 @@ struct _pthread_descr_struct {
   pthread_t p_tid;              /* Thread identifier */
   int p_pid;                    /* PID of Unix process */
   int p_priority;               /* Thread priority (== 0 if not realtime) */
-  pthread_spinlock_t * p_lock;  /* Spinlock for synchronized accesses */
+  struct _pthread_fastlock * p_lock; /* Spinlock for synchronized accesses */
   int p_signal;                 /* last signal received */
   sigjmp_buf * p_signal_jmp;    /* where to siglongjmp on a signal or NULL */
   sigjmp_buf * p_cancel_jmp;    /* where to siglongjmp on a cancel or NULL */
@@ -189,7 +189,7 @@ struct _pthread_descr_struct {
 typedef struct pthread_handle_struct * pthread_handle;
 
 struct pthread_handle_struct {
-  pthread_spinlock_t h_lock;    /* Fast lock for sychronized access */
+  struct _pthread_fastlock h_lock; /* Fast lock for sychronized access */
   pthread_descr h_descr;        /* Thread descriptor or NULL if invalid */
   char * h_bottom;              /* Lowest address in the stack thread */
 };
diff --git a/linuxthreads/join.c b/linuxthreads/join.c
index 7c9b6c5fd3..95c0ab6963 100644
--- a/linuxthreads/join.c
+++ b/linuxthreads/join.c
@@ -62,7 +62,7 @@ void pthread_exit(void * retval)
   THREAD_SETMEM(self, p_terminated, 1);
   /* See if someone is joining on us */
   joining = THREAD_GETMEM(self, p_joining);
-  __pthread_spin_unlock(THREAD_GETMEM(self, p_lock));
+  __pthread_unlock(THREAD_GETMEM(self, p_lock));
   /* Restart joining thread if any */
   if (joining != NULL) restart(joining);
   /* If this is the initial thread, block until all threads have terminated.
@@ -76,7 +76,7 @@ void pthread_exit(void * retval)
     /* Main thread flushes stdio streams and runs atexit functions.
        It also calls a handler within LinuxThreads which sends a process exit
        request to the thread manager. */
-    exit(0); 
+    exit(0);
   }
   /* Threads other than the main one  terminate without flushing stdio streams
      or running atexit functions. */
@@ -97,7 +97,7 @@ static int join_extricate_func(void *obj, pthread_descr th)
   jo = handle->h_descr;
   did_remove = jo->p_joining != NULL;
   jo->p_joining = NULL;
-  __pthread_spin_unlock(&handle->h_lock);
+  __pthread_unlock(&handle->h_lock);
 
   return did_remove;
 }
@@ -117,17 +117,17 @@ int pthread_join(pthread_t thread_id, void ** thread_return)
 
   __pthread_lock(&handle->h_lock, self);
   if (invalid_handle(handle, thread_id)) {
-    __pthread_spin_unlock(&handle->h_lock);
+    __pthread_unlock(&handle->h_lock);
     return ESRCH;
   }
   th = handle->h_descr;
   if (th == self) {
-    __pthread_spin_unlock(&handle->h_lock);
+    __pthread_unlock(&handle->h_lock);
     return EDEADLK;
   }
   /* If detached or already joined, error */
   if (th->p_detached || th->p_joining != NULL) {
-    __pthread_spin_unlock(&handle->h_lock);
+    __pthread_unlock(&handle->h_lock);
     return EINVAL;
   }
   /* If not terminated yet, suspend ourselves. */
@@ -139,7 +139,7 @@ int pthread_join(pthread_t thread_id, void ** thread_return)
       th->p_joining = self;
     else
       already_canceled = 1;
-    __pthread_spin_unlock(&handle->h_lock);
+    __pthread_unlock(&handle->h_lock);
 
     if (already_canceled) {
       __pthread_set_own_extricate_if(self, 0);
@@ -160,7 +160,7 @@ int pthread_join(pthread_t thread_id, void ** thread_return)
   }
   /* Get return value */
   if (thread_return != NULL) *thread_return = th->p_retval;
-  __pthread_spin_unlock(&handle->h_lock);
+  __pthread_unlock(&handle->h_lock);
   /* Send notification to thread manager */
   if (__pthread_manager_request >= 0) {
     request.req_thread = self;
@@ -181,24 +181,24 @@ int pthread_detach(pthread_t thread_id)
 
   __pthread_lock(&handle->h_lock, NULL);
   if (invalid_handle(handle, thread_id)) {
-    __pthread_spin_unlock(&handle->h_lock);
+    __pthread_unlock(&handle->h_lock);
     return ESRCH;
   }
   th = handle->h_descr;
   /* If already detached, error */
   if (th->p_detached) {
-    __pthread_spin_unlock(&handle->h_lock);
+    __pthread_unlock(&handle->h_lock);
     return EINVAL;
   }
   /* If already joining, don't do anything. */
   if (th->p_joining != NULL) {
-    __pthread_spin_unlock(&handle->h_lock);
+    __pthread_unlock(&handle->h_lock);
     return 0;
   }
   /* Mark as detached */
   th->p_detached = 1;
   terminated = th->p_terminated;
-  __pthread_spin_unlock(&handle->h_lock);
+  __pthread_unlock(&handle->h_lock);
   /* If already terminated, notify thread manager to reclaim resources */
   if (terminated && __pthread_manager_request >= 0) {
     request.req_thread = thread_self();
diff --git a/linuxthreads/manager.c b/linuxthreads/manager.c
index 2cc652df97..149cc938b9 100644
--- a/linuxthreads/manager.c
+++ b/linuxthreads/manager.c
@@ -177,7 +177,7 @@ int __pthread_manager(void *arg)
 	     __on_exit handler, which in turn will send REQ_PROCESS_EXIT
 	     to the thread manager. In case you are wondering how the
 	     manager terminates from its loop here. */
-	}	      
+	}
         break;
       case REQ_POST:
         __new_sem_post(request.req_args.post);
@@ -207,7 +207,7 @@ int __pthread_manager_event(void *arg)
   /* Get the lock the manager will free once all is correctly set up.  */
   __pthread_lock (THREAD_GETMEM((&__pthread_manager_thread), p_lock), NULL);
   /* Free it immediately.  */
-  __pthread_spin_unlock (THREAD_GETMEM((&__pthread_manager_thread), p_lock));
+  __pthread_unlock (THREAD_GETMEM((&__pthread_manager_thread), p_lock));
 
   return __pthread_manager(arg);
 }
@@ -273,7 +273,7 @@ static int pthread_start_thread_event(void *arg)
   /* Get the lock the manager will free once all is correctly set up.  */
   __pthread_lock (THREAD_GETMEM(self, p_lock), NULL);
   /* Free it immediately.  */
-  __pthread_spin_unlock (THREAD_GETMEM(self, p_lock));
+  __pthread_unlock (THREAD_GETMEM(self, p_lock));
 
   /* Continue with the real function.  */
   return pthread_start_thread (arg);
@@ -474,7 +474,7 @@ static int pthread_handle_create(pthread_t *thread, const pthread_attr_t *attr,
 	      __linuxthreads_create_event ();
 
 	      /* Now restart the thread.  */
-	      __pthread_spin_unlock(new_thread->p_lock);
+	      __pthread_unlock(new_thread->p_lock);
 	    }
 	}
     }
@@ -523,7 +523,7 @@ static void pthread_free(pthread_descr th)
   __pthread_lock(&handle->h_lock, NULL);
   handle->h_descr = NULL;
   handle->h_bottom = (char *)(-1L);
-  __pthread_spin_unlock(&handle->h_lock);
+  __pthread_unlock(&handle->h_lock);
 #ifdef FREE_THREAD
   FREE_THREAD(th, th->p_nr);
 #endif
@@ -594,7 +594,7 @@ static void pthread_exited(pid_t pid)
 	    }
 	}
       detached = th->p_detached;
-      __pthread_spin_unlock(th->p_lock);
+      __pthread_unlock(th->p_lock);
       if (detached)
 	pthread_free(th);
       break;
@@ -637,19 +637,19 @@ static void pthread_handle_free(pthread_t th_id)
   if (invalid_handle(handle, th_id)) {
     /* pthread_reap_children has deallocated the thread already,
        nothing needs to be done */
-    __pthread_spin_unlock(&handle->h_lock);
+    __pthread_unlock(&handle->h_lock);
     return;
   }
   th = handle->h_descr;
   if (th->p_exited) {
-    __pthread_spin_unlock(&handle->h_lock);
+    __pthread_unlock(&handle->h_lock);
     pthread_free(th);
   } else {
     /* The Unix process of the thread is still running.
        Mark the thread as detached so that the thread manager will
        deallocate its resources when the Unix process exits. */
     th->p_detached = 1;
-    __pthread_spin_unlock(&handle->h_lock);
+    __pthread_unlock(&handle->h_lock);
   }
 }
 
diff --git a/linuxthreads/mutex.c b/linuxthreads/mutex.c
index a42167cce0..6494323006 100644
--- a/linuxthreads/mutex.c
+++ b/linuxthreads/mutex.c
@@ -110,7 +110,7 @@ int __pthread_mutex_unlock(pthread_mutex_t * mutex)
 {
   switch (mutex->__m_kind) {
   case PTHREAD_MUTEX_FAST_NP:
-    __pthread_spin_unlock(&mutex->__m_lock);
+    __pthread_unlock(&mutex->__m_lock);
     return 0;
   case PTHREAD_MUTEX_RECURSIVE_NP:
     if (mutex->__m_count > 0) {
@@ -118,13 +118,13 @@ int __pthread_mutex_unlock(pthread_mutex_t * mutex)
       return 0;
     }
     mutex->__m_owner = NULL;
-    __pthread_spin_unlock(&mutex->__m_lock);
+    __pthread_unlock(&mutex->__m_lock);
     return 0;
   case PTHREAD_MUTEX_ERRORCHECK_NP:
     if (mutex->__m_owner != thread_self() || mutex->__m_lock.__status == 0)
       return EPERM;
     mutex->__m_owner = NULL;
-    __pthread_spin_unlock(&mutex->__m_lock);
+    __pthread_unlock(&mutex->__m_lock);
     return 0;
   default:
     return EINVAL;
diff --git a/linuxthreads/pthread.c b/linuxthreads/pthread.c
index 0e713e74da..0f63127475 100644
--- a/linuxthreads/pthread.c
+++ b/linuxthreads/pthread.c
@@ -460,7 +460,7 @@ int __pthread_initialize_manager(void)
 	      __linuxthreads_create_event ();
 
 	      /* Now restart the thread.  */
-	      __pthread_spin_unlock(__pthread_manager_thread.p_lock);
+	      __pthread_unlock(__pthread_manager_thread.p_lock);
 	    }
 	}
     }
@@ -587,16 +587,16 @@ int pthread_setschedparam(pthread_t thread, int policy,
 
   __pthread_lock(&handle->h_lock, NULL);
   if (invalid_handle(handle, thread)) {
-    __pthread_spin_unlock(&handle->h_lock);
+    __pthread_unlock(&handle->h_lock);
     return ESRCH;
   }
   th = handle->h_descr;
   if (__sched_setscheduler(th->p_pid, policy, param) == -1) {
-    __pthread_spin_unlock(&handle->h_lock);
+    __pthread_unlock(&handle->h_lock);
     return errno;
   }
   th->p_priority = policy == SCHED_OTHER ? 0 : param->sched_priority;
-  __pthread_spin_unlock(&handle->h_lock);
+  __pthread_unlock(&handle->h_lock);
   if (__pthread_manager_request >= 0)
     __pthread_manager_adjust_prio(th->p_priority);
   return 0;
@@ -610,11 +610,11 @@ int pthread_getschedparam(pthread_t thread, int *policy,
 
   __pthread_lock(&handle->h_lock, NULL);
   if (invalid_handle(handle, thread)) {
-    __pthread_spin_unlock(&handle->h_lock);
+    __pthread_unlock(&handle->h_lock);
     return ESRCH;
   }
   pid = handle->h_descr->p_pid;
-  __pthread_spin_unlock(&handle->h_lock);
+  __pthread_unlock(&handle->h_lock);
   pol = __sched_getscheduler(pid);
   if (pol == -1) return errno;
   if (__sched_getparam(pid, param) == -1) return errno;
@@ -788,7 +788,7 @@ void __pthread_set_own_extricate_if(pthread_descr self, pthread_extricate_if *pe
 {
   __pthread_lock(self->p_lock, self);
   THREAD_SETMEM(self, p_extricate, peif);
-  __pthread_spin_unlock(self->p_lock);
+  __pthread_unlock(self->p_lock);
 }
 
 /* Primitives for controlling thread execution */
diff --git a/linuxthreads/rwlock.c b/linuxthreads/rwlock.c
index e4a4c81f8c..9da87d25d1 100644
--- a/linuxthreads/rwlock.c
+++ b/linuxthreads/rwlock.c
@@ -217,7 +217,7 @@ __pthread_rwlock_destroy (pthread_rwlock_t *rwlock)
   __pthread_lock (&rwlock->__rw_lock, NULL);
   readers = rwlock->__rw_readers;
   writer = rwlock->__rw_writer;
-  __pthread_spin_unlock (&rwlock->__rw_lock);
+  __pthread_unlock (&rwlock->__rw_lock);
 
   if (readers > 0 || writer != NULL)
     return EBUSY;
@@ -247,12 +247,12 @@ __pthread_rwlock_rdlock (pthread_rwlock_t *rwlock)
 	break;
 
       enqueue (&rwlock->__rw_read_waiting, self);
-      __pthread_spin_unlock (&rwlock->__rw_lock);
+      __pthread_unlock (&rwlock->__rw_lock);
       suspend (self); /* This is not a cancellation point */
     }
 
   ++rwlock->__rw_readers;
-  __pthread_spin_unlock (&rwlock->__rw_lock);
+  __pthread_unlock (&rwlock->__rw_lock);
 
   if (have_lock_already || out_of_mem)
     {
@@ -291,7 +291,7 @@ __pthread_rwlock_tryrdlock (pthread_rwlock_t *rwlock)
       retval = 0;
     }
 
-  __pthread_spin_unlock (&rwlock->__rw_lock);
+  __pthread_unlock (&rwlock->__rw_lock);
 
   if (retval == 0)
     {
@@ -320,13 +320,13 @@ __pthread_rwlock_wrlock (pthread_rwlock_t *rwlock)
       if (rwlock->__rw_readers == 0 && rwlock->__rw_writer == NULL)
 	{
 	  rwlock->__rw_writer = self;
-	  __pthread_spin_unlock (&rwlock->__rw_lock);
+	  __pthread_unlock (&rwlock->__rw_lock);
 	  return 0;
 	}
 
       /* Suspend ourselves, then try again */
       enqueue (&rwlock->__rw_write_waiting, self);
-      __pthread_spin_unlock (&rwlock->__rw_lock);
+      __pthread_unlock (&rwlock->__rw_lock);
       suspend (self); /* This is not a cancellation point */
     }
 }
@@ -344,7 +344,7 @@ __pthread_rwlock_trywrlock (pthread_rwlock_t *rwlock)
       rwlock->__rw_writer = thread_self ();
       result = 0;
     }
-  __pthread_spin_unlock (&rwlock->__rw_lock);
+  __pthread_unlock (&rwlock->__rw_lock);
 
   return result;
 }
@@ -363,7 +363,7 @@ __pthread_rwlock_unlock (pthread_rwlock_t *rwlock)
       /* Unlocking a write lock.  */
       if (rwlock->__rw_writer != thread_self ())
 	{
-	  __pthread_spin_unlock (&rwlock->__rw_lock);
+	  __pthread_unlock (&rwlock->__rw_lock);
 	  return EPERM;
 	}
       rwlock->__rw_writer = NULL;
@@ -375,14 +375,14 @@ __pthread_rwlock_unlock (pthread_rwlock_t *rwlock)
 	  /* Restart all waiting readers.  */
 	  torestart = rwlock->__rw_read_waiting;
 	  rwlock->__rw_read_waiting = NULL;
-	  __pthread_spin_unlock (&rwlock->__rw_lock);
+	  __pthread_unlock (&rwlock->__rw_lock);
 	  while ((th = dequeue (&torestart)) != NULL)
 	    restart (th);
 	}
       else
 	{
 	  /* Restart one waiting writer.  */
-	  __pthread_spin_unlock (&rwlock->__rw_lock);
+	  __pthread_unlock (&rwlock->__rw_lock);
 	  restart (th);
 	}
     }
@@ -391,7 +391,7 @@ __pthread_rwlock_unlock (pthread_rwlock_t *rwlock)
       /* Unlocking a read lock.  */
       if (rwlock->__rw_readers == 0)
 	{
-	  __pthread_spin_unlock (&rwlock->__rw_lock);
+	  __pthread_unlock (&rwlock->__rw_lock);
 	  return EPERM;
 	}
 
@@ -402,7 +402,7 @@ __pthread_rwlock_unlock (pthread_rwlock_t *rwlock)
       else
 	th = NULL;
 
-      __pthread_spin_unlock (&rwlock->__rw_lock);
+      __pthread_unlock (&rwlock->__rw_lock);
       if (th != NULL)
 	restart (th);
 
diff --git a/linuxthreads/semaphore.c b/linuxthreads/semaphore.c
index 35bb79679b..a772ea5091 100644
--- a/linuxthreads/semaphore.c
+++ b/linuxthreads/semaphore.c
@@ -33,7 +33,7 @@ int __new_sem_init(sem_t *sem, int pshared, unsigned int value)
     errno = ENOSYS;
     return -1;
   }
-  __pthread_init_lock((pthread_spinlock_t *) &sem->__sem_lock);
+  __pthread_init_lock((struct _pthread_fastlock *) &sem->__sem_lock);
   sem->__sem_value = value;
   sem->__sem_waiting = NULL;
   return 0;
@@ -48,9 +48,9 @@ static int new_sem_extricate_func(void *obj, pthread_descr th)
   sem_t *sem = obj;
   int did_remove = 0;
 
-  __pthread_lock((pthread_spinlock_t *) &sem->__sem_lock, self);
+  __pthread_lock((struct _pthread_fastlock *) &sem->__sem_lock, self);
   did_remove = remove_from_queue(&sem->__sem_waiting, th);
-  __pthread_spin_unlock((pthread_spinlock_t *) &sem->__sem_lock);
+  __pthread_unlock((struct _pthread_fastlock *) &sem->__sem_lock);
 
   return did_remove;
 }
@@ -65,10 +65,10 @@ int __new_sem_wait(sem_t * sem)
   extr.pu_object = sem;
   extr.pu_extricate_func = new_sem_extricate_func;
 
-  __pthread_lock((pthread_spinlock_t *) &sem->__sem_lock, self);
+  __pthread_lock((struct _pthread_fastlock *) &sem->__sem_lock, self);
   if (sem->__sem_value > 0) {
     sem->__sem_value--;
-    __pthread_spin_unlock((pthread_spinlock_t *) &sem->__sem_lock);
+    __pthread_unlock((struct _pthread_fastlock *) &sem->__sem_lock);
     return 0;
   }
   /* Register extrication interface */
@@ -79,7 +79,7 @@ int __new_sem_wait(sem_t * sem)
     enqueue(&sem->__sem_waiting, self);
   else
     already_canceled = 1;
-  __pthread_spin_unlock((pthread_spinlock_t *) &sem->__sem_lock);
+  __pthread_unlock((struct _pthread_fastlock *) &sem->__sem_lock);
 
   if (already_canceled) {
     __pthread_set_own_extricate_if(self, 0);
@@ -106,7 +106,7 @@ int __new_sem_trywait(sem_t * sem)
 {
   int retval;
 
-  __pthread_lock((pthread_spinlock_t *) &sem->__sem_lock, NULL);
+  __pthread_lock((struct _pthread_fastlock *) &sem->__sem_lock, NULL);
   if (sem->__sem_value == 0) {
     errno = EAGAIN;
     retval = -1;
@@ -114,7 +114,7 @@ int __new_sem_trywait(sem_t * sem)
     sem->__sem_value--;
     retval = 0;
   }
-  __pthread_spin_unlock((pthread_spinlock_t *) &sem->__sem_lock);
+  __pthread_unlock((struct _pthread_fastlock *) &sem->__sem_lock);
   return retval;
 }
 
@@ -125,19 +125,19 @@ int __new_sem_post(sem_t * sem)
   struct pthread_request request;
 
   if (THREAD_GETMEM(self, p_in_sighandler) == NULL) {
-    __pthread_lock((pthread_spinlock_t *) &sem->__sem_lock, self);
+    __pthread_lock((struct _pthread_fastlock *) &sem->__sem_lock, self);
     if (sem->__sem_waiting == NULL) {
       if (sem->__sem_value >= SEM_VALUE_MAX) {
         /* Overflow */
         errno = ERANGE;
-        __pthread_spin_unlock((pthread_spinlock_t *) &sem->__sem_lock);
+        __pthread_unlock((struct _pthread_fastlock *) &sem->__sem_lock);
         return -1;
       }
       sem->__sem_value++;
-      __pthread_spin_unlock((pthread_spinlock_t *) &sem->__sem_lock);
+      __pthread_unlock((struct _pthread_fastlock *) &sem->__sem_lock);
     } else {
       th = dequeue(&sem->__sem_waiting);
-      __pthread_spin_unlock((pthread_spinlock_t *) &sem->__sem_lock);
+      __pthread_unlock((struct _pthread_fastlock *) &sem->__sem_lock);
       restart(th);
     }
   } else {
@@ -196,17 +196,17 @@ int sem_timedwait(sem_t *sem, const struct timespec *abstime)
   pthread_extricate_if extr;
   int already_canceled = 0;
 
-  __pthread_lock((pthread_spinlock_t *) &sem->__sem_lock, self);
+  __pthread_lock((struct _pthread_fastlock *) &sem->__sem_lock, self);
   if (sem->__sem_value > 0) {
     --sem->__sem_value;
-    __pthread_spin_unlock((pthread_spinlock_t *) &sem->__sem_lock);
+    __pthread_unlock((struct _pthread_fastlock *) &sem->__sem_lock);
     return 0;
   }
 
   if (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000) {
     /* The standard requires that if the function would block and the
        time value is illegal, the function returns with an error.  */
-    __pthread_spin_unlock((pthread_spinlock_t *) &sem->__sem_lock);
+    __pthread_unlock((struct _pthread_fastlock *) &sem->__sem_lock);
     return EINVAL;
   }
 
@@ -222,7 +222,7 @@ int sem_timedwait(sem_t *sem, const struct timespec *abstime)
     enqueue(&sem->__sem_waiting, self);
   else
     already_canceled = 1;
-  __pthread_spin_unlock((pthread_spinlock_t *) &sem->__sem_lock);
+  __pthread_unlock((struct _pthread_fastlock *) &sem->__sem_lock);
 
   if (already_canceled) {
     __pthread_set_own_extricate_if(self, 0);
@@ -235,9 +235,9 @@ int sem_timedwait(sem_t *sem, const struct timespec *abstime)
     /* __pthread_lock will queue back any spurious restarts that
        may happen to it. */
 
-    __pthread_lock((pthread_spinlock_t *)&sem->__sem_lock, self);
+    __pthread_lock((struct _pthread_fastlock *)&sem->__sem_lock, self);
     was_on_queue = remove_from_queue(&sem->__sem_waiting, self);
-    __pthread_spin_unlock((pthread_spinlock_t *)&sem->__sem_lock);
+    __pthread_unlock((struct _pthread_fastlock *)&sem->__sem_lock);
 
     if (was_on_queue) {
       __pthread_set_own_extricate_if(self, 0);
diff --git a/linuxthreads/signals.c b/linuxthreads/signals.c
index 3a7dd00701..452d860f92 100644
--- a/linuxthreads/signals.c
+++ b/linuxthreads/signals.c
@@ -57,11 +57,11 @@ int pthread_kill(pthread_t thread, int signo)
 
   __pthread_lock(&handle->h_lock, NULL);
   if (invalid_handle(handle, thread)) {
-    __pthread_spin_unlock(&handle->h_lock);
+    __pthread_unlock(&handle->h_lock);
     return ESRCH;
   }
   pid = handle->h_descr->p_pid;
-  __pthread_spin_unlock(&handle->h_lock);
+  __pthread_unlock(&handle->h_lock);
   if (kill(pid, signo) == -1)
     return errno;
   else
diff --git a/linuxthreads/spinlock.c b/linuxthreads/spinlock.c
index c482d910dc..50edfa38cb 100644
--- a/linuxthreads/spinlock.c
+++ b/linuxthreads/spinlock.c
@@ -36,7 +36,7 @@
    This is safe because there are no concurrent __pthread_unlock
    operations -- only the thread that locked the mutex can unlock it. */
 
-void internal_function __pthread_lock(pthread_spinlock_t * lock,
+void internal_function __pthread_lock(struct _pthread_fastlock * lock,
 				      pthread_descr self)
 {
   long oldstatus, newstatus;
@@ -83,14 +83,8 @@ void internal_function __pthread_lock(pthread_spinlock_t * lock,
   while (spurious_wakeup_count--)
     restart(self);
 }
-int __pthread_spin_lock(pthread_spinlock_t * lock)
-{
-  __pthread_lock (lock, NULL);
-  return 0;
-}
-weak_alias (__pthread_spin_lock, pthread_spin_lock)
 
-int __pthread_spin_unlock(pthread_spinlock_t * lock)
+int __pthread_unlock(struct _pthread_fastlock * lock)
 {
   long oldstatus;
   pthread_descr thr, * ptr, * maxptr;
@@ -151,31 +145,7 @@ again:
 
   return 0;
 }
-weak_alias (__pthread_spin_unlock, pthread_spin_unlock)
-
-
-int __pthread_spin_trylock (pthread_spinlock_t *lock)
-{
-  return __pthread_trylock (lock);
-}
-weak_alias (__pthread_spin_trylock, pthread_spin_trylock)
 
-int __pthread_spin_init(pthread_spinlock_t *lock, int pshared)
-{
-  if (pshared != 0)
-    return ENOSYS;
-
-  __pthread_init_lock (lock);
-  return 0;
-}
-weak_alias (__pthread_spin_init, pthread_spin_init)
-
-int __pthread_spin_destroy(pthread_spinlock_t *lock)
-{
-  /* Nothing to do.  */
-  return 0;
-}
-weak_alias (__pthread_spin_destroy, pthread_spin_destroy)
 
 /* Compare-and-swap emulation with a spinlock */
 
diff --git a/linuxthreads/spinlock.h b/linuxthreads/spinlock.h
index 0b4ed9d9d2..96010e4636 100644
--- a/linuxthreads/spinlock.h
+++ b/linuxthreads/spinlock.h
@@ -50,17 +50,17 @@ static inline int compare_and_swap(long * ptr, long oldval, long newval,
 
 /* Internal locks */
 
-extern void internal_function __pthread_lock(pthread_spinlock_t * lock,
+extern void internal_function __pthread_lock(struct _pthread_fastlock * lock,
 					     pthread_descr self);
-extern int __pthread_spin_unlock(pthread_spinlock_t *lock);
+extern int __pthread_unlock(struct _pthread_fastlock *lock);
 
-static inline void __pthread_init_lock(pthread_spinlock_t * lock)
+static inline void __pthread_init_lock(struct _pthread_fastlock * lock)
 {
   lock->__status = 0;
   lock->__spinlock = 0;
 }
 
-static inline int __pthread_trylock (pthread_spinlock_t * lock)
+static inline int __pthread_trylock (struct _pthread_fastlock * lock)
 {
   long oldstatus;
 
diff --git a/linuxthreads/sysdeps/alpha/pspinlock.c b/linuxthreads/sysdeps/alpha/pspinlock.c
new file mode 100644
index 0000000000..0d871b4174
--- /dev/null
+++ b/linuxthreads/sysdeps/alpha/pspinlock.c
@@ -0,0 +1,109 @@
+/* POSIX spinlock implementation.  Alpha version.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <errno.h>
+#include <pthread.h>
+
+
+/* This implementation is similar to the one used in the Linux kernel.
+   But the kernel is byte instructions for the memory access.  This is
+   faster but unusable here.  The problem is that only 128
+   threads/processes could use the spinlock at the same time.  If (by
+   a design error in the program) a thread/process would hold the
+   spinlock for a time long enough to accumulate 128 waiting
+   processes, the next one will find a positive value in the spinlock
+   and assume it is unlocked.  We cannot accept that.  */
+
+int
+__pthread_spin_lock (pthread_spinlock_t *lock)
+{
+  unsigned int tmp;
+  asm volatile
+    ("1:	ldl_l	%0,%1\n"
+     "		blbs	%0,2f\n"
+     "		or	%0,1,%0\n"
+     "		stl_c	%0,%1\n"
+     "		beq	%0,2f\n"
+     "		mb\n"
+     ".subsection 2\n"
+     "2:	ldl	%0,%1\n"
+     "		blbs	%0,2b\n"
+     "		br	1b\n"
+     ".previous"
+     : "=r" (tmp), "=m" (lock)
+     : "m" (lock));
+  return 0;
+}
+weak_alias (__pthread_spin_lock, pthread_spin_lock)
+
+
+int
+__pthread_spin_trylock (pthread_spinlock_t *lock)
+{
+  unsigned long int oldval;
+  unsigned long int temp;
+
+  asm volatile
+    ("1:	ldl_l	%0,%1\n"
+     "		and	%0,%3,%2\n"
+     "		bne	%2,2f\n"
+     "		xor	%0,%3,%0\n"
+     "		stl_c	%0,%1\n"
+     "		beq	%0,3f\n"
+     "		mb\n"
+     "2:\n"
+     ".subsection 2\n"
+     "3:	br	1b\n"
+     ".previous"
+     : "=&r" (temp), "=m" (*lock), "=&r" (oldval)
+     : "Ir" (1UL), "m" (*lock));
+
+  return oldval == 0 ? 0 : EBUSY;
+}
+weak_alias (__pthread_spin_trylock, pthread_spin_trylock)
+
+
+int
+__pthread_spin_unlock (pthread_spinlock_t *lock)
+{
+  asm volatile ("mb");
+  return *lock = 0;
+}
+weak_alias (__pthread_spin_unlock, pthread_spin_unlock)
+
+
+int
+__pthread_spin_init (pthread_spinlock_t *lock, int pshared)
+{
+  /* We can ignore the `pshared' parameter.  Since we are busy-waiting
+     all processes which can access the memory location `lock' points
+     to can use the spinlock.  */
+  *lock = 0;
+  return 0;
+}
+weak_alias (__pthread_spin_init, pthread_spin_init)
+
+
+int
+__pthread_spin_destroy (pthread_spinlock_t *lock)
+{
+  /* Nothing to do.  */
+  return 0;
+}
+weak_alias (__pthread_spin_destroy, pthread_spin_destroy)
diff --git a/linuxthreads/sysdeps/arm/pspinlock.c b/linuxthreads/sysdeps/arm/pspinlock.c
new file mode 100644
index 0000000000..a56881adfd
--- /dev/null
+++ b/linuxthreads/sysdeps/arm/pspinlock.c
@@ -0,0 +1,81 @@
+/* POSIX spinlock implementation.  Arm version.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <errno.h>
+#include <pthread.h>
+
+
+int
+__pthread_spin_lock (pthread_spinlock_t *lock)
+{
+  unsigned int val;
+
+  do
+    asm volatile ("swp %0, %1, [%2]"
+		  : "=r" (val)
+		  : "0" (1), "r" (lock)
+		  : "memory");
+  while (val != 0);
+
+  return 0;
+}
+weak_alias (__pthread_spin_lock, pthread_spin_lock)
+
+
+int
+__pthread_spin_trylock (pthread_spinlock_t *lock)
+{
+  unsigned int val;
+
+  asm volatile ("swp %0, %1, [%2]"
+		: "=r" (val)
+		: "0" (1), "r" (lock)
+		: "memory");
+
+  return val ? EBUSY : 0;
+}
+weak_alias (__pthread_spin_trylock, pthread_spin_trylock)
+
+
+int
+__pthread_spin_unlock (pthread_spinlock_t *lock)
+{
+  return *lock = 0;
+}
+weak_alias (__pthread_spin_unlock, pthread_spin_unlock)
+
+
+int
+__pthread_spin_init (pthread_spinlock_t *lock, int pshared)
+{
+  /* We can ignore the `pshared' parameter.  Since we are busy-waiting
+     all processes which can access the memory location `lock' points
+     to can use the spinlock.  */
+  return *lock = 0;
+}
+weak_alias (__pthread_spin_init, pthread_spin_init)
+
+
+int
+__pthread_spin_destroy (pthread_spinlock_t *lock)
+{
+  /* Nothing to do.  */
+  return 0;
+}
+weak_alias (__pthread_spin_destroy, pthread_spin_destroy)
diff --git a/linuxthreads/sysdeps/i386/pspinlock.c b/linuxthreads/sysdeps/i386/pspinlock.c
new file mode 100644
index 0000000000..426e63a70c
--- /dev/null
+++ b/linuxthreads/sysdeps/i386/pspinlock.c
@@ -0,0 +1,97 @@
+/* POSIX spinlock implementation.  x86 version.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <errno.h>
+#include <pthread.h>
+
+
+/* This implementation is similar to the one used in the Linux kernel.
+   But the kernel is byte instructions for the memory access.  This is
+   faster but unusable here.  The problem is that only 128
+   threads/processes could use the spinlock at the same time.  If (by
+   a design error in the program) a thread/process would hold the
+   spinlock for a time long enough to accumulate 128 waiting
+   processes, the next one will find a positive value in the spinlock
+   and assume it is unlocked.  We cannot accept that.  */
+
+int
+__pthread_spin_lock (pthread_spinlock_t *lock)
+{
+  asm volatile
+    ("\n"
+     "1:\n\t"
+     "lock; decl %0\n\t"
+     "js 2f\n\t"
+     ".section .text.spinlock,\"ax\"\n"
+     "2:\n\t"
+     "cmpl $0,%0\n\t"
+     "rep; nop\n\t"
+     "jle 2b\n\t"
+     "jmp 1b\n\t"
+     ".previous"
+     : "=m" (*lock));
+  return 0;
+}
+weak_alias (__pthread_spin_lock, pthread_spin_lock)
+
+
+int
+__pthread_spin_trylock (pthread_spinlock_t *lock)
+{
+  int oldval;
+
+  asm volatile
+    ("xchgl %0,%1"
+     : "=r" (oldval), "=m" (*lock)
+     : "0" (0));
+  return oldval > 0 ? 0 : EBUSY;
+}
+weak_alias (__pthread_spin_trylock, pthread_spin_trylock)
+
+
+int
+__pthread_spin_unlock (pthread_spinlock_t *lock)
+{
+  asm volatile
+    ("movl $1,%0"
+     : "=m" (*lock));
+  return 0;
+}
+weak_alias (__pthread_spin_unlock, pthread_spin_unlock)
+
+
+int
+__pthread_spin_init (pthread_spinlock_t *lock, int pshared)
+{
+  /* We can ignore the `pshared' parameter.  Since we are busy-waiting
+     all processes which can access the memory location `lock' points
+     to can use the spinlock.  */
+  *lock = 1;
+  return 0;
+}
+weak_alias (__pthread_spin_init, pthread_spin_init)
+
+
+int
+__pthread_spin_destroy (pthread_spinlock_t *lock)
+{
+  /* Nothing to do.  */
+  return 0;
+}
+weak_alias (__pthread_spin_destroy, pthread_spin_destroy)
diff --git a/linuxthreads/sysdeps/m68k/pspinlock.c b/linuxthreads/sysdeps/m68k/pspinlock.c
new file mode 100644
index 0000000000..994adc883c
--- /dev/null
+++ b/linuxthreads/sysdeps/m68k/pspinlock.c
@@ -0,0 +1,81 @@
+/* POSIX spinlock implementation.  M68k version.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <errno.h>
+#include <pthread.h>
+
+
+int
+__pthread_spin_lock (pthread_spinlock_t *lock)
+{
+  unsigned int val;
+
+  do
+    asm volatile ("tas %1; sne %0"
+		  : "=dm" (val), "=m" (*lock)
+		  : "m" (*lock)
+		  : "cc");
+  while (val);
+
+  return 0;
+}
+weak_alias (__pthread_spin_lock, pthread_spin_lock)
+
+
+int
+__pthread_spin_trylock (pthread_spinlock_t *lock)
+{
+  unsigned int val;
+
+  asm volatile ("tas %1; sne %0"
+		: "=dm" (val), "=m" (*lock)
+		: "m" (*lock)
+		: "cc");
+
+  return val ? EBUSY : 0;
+}
+weak_alias (__pthread_spin_trylock, pthread_spin_trylock)
+
+
+int
+__pthread_spin_unlock (pthread_spinlock_t *lock)
+{
+  return *lock = 0;
+}
+weak_alias (__pthread_spin_unlock, pthread_spin_unlock)
+
+
+int
+__pthread_spin_init (pthread_spinlock_t *lock, int pshared)
+{
+  /* We can ignore the `pshared' parameter.  Since we are busy-waiting
+     all processes which can access the memory location `lock' points
+     to can use the spinlock.  */
+  return *lock = 0;
+}
+weak_alias (__pthread_spin_init, pthread_spin_init)
+
+
+int
+__pthread_spin_destroy (pthread_spinlock_t *lock)
+{
+  /* Nothing to do.  */
+  return 0;
+}
+weak_alias (__pthread_spin_destroy, pthread_spin_destroy)
diff --git a/linuxthreads/sysdeps/mips/pspinlock.c b/linuxthreads/sysdeps/mips/pspinlock.c
new file mode 100644
index 0000000000..d6cda216ff
--- /dev/null
+++ b/linuxthreads/sysdeps/mips/pspinlock.c
@@ -0,0 +1,66 @@
+/* POSIX spinlock implementation.  MIPS version.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <errno.h>
+#include <pthread.h>
+
+
+int
+__pthread_spin_lock (pthread_spinlock_t *lock)
+{
+  XXX
+}
+weak_alias (__pthread_spin_lock, pthread_spin_lock)
+
+
+int
+__pthread_spin_trylock (pthread_spinlock_t *lock)
+{
+  XXX
+}
+weak_alias (__pthread_spin_trylock, pthread_spin_trylock)
+
+
+int
+__pthread_spin_unlock (pthread_spinlock_t *lock)
+{
+  XXX
+}
+weak_alias (__pthread_spin_unlock, pthread_spin_unlock)
+
+
+int
+__pthread_spin_init (pthread_spinlock_t *lock, int pshared)
+{
+  /* We can ignore the `pshared' parameter.  Since we are busy-waiting
+     all processes which can access the memory location `lock' points
+     to can use the spinlock.  */
+  XXX
+  return 0;
+}
+weak_alias (__pthread_spin_init, pthread_spin_init)
+
+
+int
+__pthread_spin_destroy (pthread_spinlock_t *lock)
+{
+  /* Nothing to do.  */
+  return 0;
+}
+weak_alias (__pthread_spin_destroy, pthread_spin_destroy)
diff --git a/linuxthreads/sysdeps/powerpc/pspinlock.c b/linuxthreads/sysdeps/powerpc/pspinlock.c
new file mode 100644
index 0000000000..6858ee1cf8
--- /dev/null
+++ b/linuxthreads/sysdeps/powerpc/pspinlock.c
@@ -0,0 +1,66 @@
+/* POSIX spinlock implementation.  PowerPC version.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <errno.h>
+#include <pthread.h>
+
+
+int
+__pthread_spin_lock (pthread_spinlock_t *lock)
+{
+  XXX
+}
+weak_alias (__pthread_spin_lock, pthread_spin_lock)
+
+
+int
+__pthread_spin_trylock (pthread_spinlock_t *lock)
+{
+  XXX
+}
+weak_alias (__pthread_spin_trylock, pthread_spin_trylock)
+
+
+int
+__pthread_spin_unlock (pthread_spinlock_t *lock)
+{
+  XXX
+}
+weak_alias (__pthread_spin_unlock, pthread_spin_unlock)
+
+
+int
+__pthread_spin_init (pthread_spinlock_t *lock, int pshared)
+{
+  /* We can ignore the `pshared' parameter.  Since we are busy-waiting
+     all processes which can access the memory location `lock' points
+     to can use the spinlock.  */
+  XXX
+  return 0;
+}
+weak_alias (__pthread_spin_init, pthread_spin_init)
+
+
+int
+__pthread_spin_destroy (pthread_spinlock_t *lock)
+{
+  /* Nothing to do.  */
+  return 0;
+}
+weak_alias (__pthread_spin_destroy, pthread_spin_destroy)
diff --git a/linuxthreads/sysdeps/pthread/bits/pthreadtypes.h b/linuxthreads/sysdeps/pthread/bits/pthreadtypes.h
index a4878310ac..99e56d23ee 100644
--- a/linuxthreads/sysdeps/pthread/bits/pthreadtypes.h
+++ b/linuxthreads/sysdeps/pthread/bits/pthreadtypes.h
@@ -23,11 +23,11 @@
 #include <bits/sched.h>
 
 /* Fast locks (not abstract because mutexes and conditions aren't abstract). */
-typedef struct
+struct _pthread_fastlock
 {
   long int __status;            /* "Free" or "taken" or head of waiting list */
   int __spinlock;               /* For compare-and-swap emulation */
-} pthread_spinlock_t;
+};
 
 #ifndef _PTHREAD_DESCR_DEFINED
 /* Thread descriptors */
@@ -54,7 +54,7 @@ typedef struct
 /* Conditions (not abstract because of PTHREAD_COND_INITIALIZER */
 typedef struct
 {
-  pthread_spinlock_t __c_lock; /* Protect against concurrent access */
+  struct _pthread_fastlock __c_lock; /* Protect against concurrent access */
   _pthread_descr __c_waiting;        /* Threads waiting on this condition */
 } pthread_cond_t;
 
@@ -78,7 +78,7 @@ typedef struct
   int __m_count;                  /* Depth of recursive locking */
   _pthread_descr __m_owner;       /* Owner thread (if recursive or errcheck) */
   int __m_kind;                   /* Mutex kind: fast, recursive or errcheck */
-  pthread_spinlock_t __m_lock;    /* Underlying fast lock */
+  struct _pthread_fastlock __m_lock; /* Underlying fast lock */
 } pthread_mutex_t;
 
 
@@ -97,7 +97,7 @@ typedef int pthread_once_t;
 /* Read-write locks.  */
 typedef struct _pthread_rwlock_t
 {
-  pthread_spinlock_t __rw_lock;       /* Lock to guarantee mutual exclusion */
+  struct _pthread_fastlock __rw_lock; /* Lock to guarantee mutual exclusion */
   int __rw_readers;                   /* Number of readers */
   _pthread_descr __rw_writer;         /* Identity of writer, or NULL if none */
   _pthread_descr __rw_read_waiting;   /* Threads waiting for reading */
@@ -115,6 +115,11 @@ typedef struct
 } pthread_rwlockattr_t;
 #endif
 
+#ifdef __USE_XOPEN2K
+/* POSIX spinlock data type.  */
+typedef volatile int pthread_spinlock_t;
+#endif
+
 
 /* Thread identifiers */
 typedef unsigned long int pthread_t;
diff --git a/linuxthreads/sysdeps/sparc/sparc32/pspinlock.c b/linuxthreads/sysdeps/sparc/sparc32/pspinlock.c
new file mode 100644
index 0000000000..ff72ff0c35
--- /dev/null
+++ b/linuxthreads/sysdeps/sparc/sparc32/pspinlock.c
@@ -0,0 +1,66 @@
+/* POSIX spinlock implementation.  SPARC32 version.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <errno.h>
+#include <pthread.h>
+
+
+int
+__pthread_spin_lock (pthread_spinlock_t *lock)
+{
+  XXX
+}
+weak_alias (__pthread_spin_lock, pthread_spin_lock)
+
+
+int
+__pthread_spin_trylock (pthread_spinlock_t *lock)
+{
+  XXX
+}
+weak_alias (__pthread_spin_trylock, pthread_spin_trylock)
+
+
+int
+__pthread_spin_unlock (pthread_spinlock_t *lock)
+{
+  XXX
+}
+weak_alias (__pthread_spin_unlock, pthread_spin_unlock)
+
+
+int
+__pthread_spin_init (pthread_spinlock_t *lock, int pshared)
+{
+  /* We can ignore the `pshared' parameter.  Since we are busy-waiting
+     all processes which can access the memory location `lock' points
+     to can use the spinlock.  */
+  XXX
+  return 0;
+}
+weak_alias (__pthread_spin_init, pthread_spin_init)
+
+
+int
+__pthread_spin_destroy (pthread_spinlock_t *lock)
+{
+  /* Nothing to do.  */
+  return 0;
+}
+weak_alias (__pthread_spin_destroy, pthread_spin_destroy)
diff --git a/linuxthreads/sysdeps/sparc/sparc64/pspinlock.c b/linuxthreads/sysdeps/sparc/sparc64/pspinlock.c
new file mode 100644
index 0000000000..83edb08bba
--- /dev/null
+++ b/linuxthreads/sysdeps/sparc/sparc64/pspinlock.c
@@ -0,0 +1,66 @@
+/* POSIX spinlock implementation.  SPARC64 version.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <errno.h>
+#include <pthread.h>
+
+
+int
+__pthread_spin_lock (pthread_spinlock_t *lock)
+{
+  XXX
+}
+weak_alias (__pthread_spin_lock, pthread_spin_lock)
+
+
+int
+__pthread_spin_trylock (pthread_spinlock_t *lock)
+{
+  XXX
+}
+weak_alias (__pthread_spin_trylock, pthread_spin_trylock)
+
+
+int
+__pthread_spin_unlock (pthread_spinlock_t *lock)
+{
+  XXX
+}
+weak_alias (__pthread_spin_unlock, pthread_spin_unlock)
+
+
+int
+__pthread_spin_init (pthread_spinlock_t *lock, int pshared)
+{
+  /* We can ignore the `pshared' parameter.  Since we are busy-waiting
+     all processes which can access the memory location `lock' points
+     to can use the spinlock.  */
+  XXX
+  return 0;
+}
+weak_alias (__pthread_spin_init, pthread_spin_init)
+
+
+int
+__pthread_spin_destroy (pthread_spinlock_t *lock)
+{
+  /* Nothing to do.  */
+  return 0;
+}
+weak_alias (__pthread_spin_destroy, pthread_spin_destroy)