[BZ #4586]

2007-06-06  Jakub Jelinek  <jakub@redhat.com>
	BZ #4586
	* sysdeps/i386/ldbl2mpn.c (__mpn_extract_long_double): Treat
	pseudo-zeros as zero.
	* sysdeps/x86_64/ldbl2mpn.c: New file.
	* sysdeps/ia64/ldbl2mpn.c: New file.

44 files changed, 320 insertions, 125 deletions

diff --git a/ChangeLog b/ChangeLog
index 5845b8a951..f54c445196 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2007-06-06  Jakub Jelinek  <jakub@redhat.com>
+
+	BZ #4586
+	* sysdeps/i386/ldbl2mpn.c (__mpn_extract_long_double): Treat
+	pseudo-zeros as zero.
+	* sysdeps/x86_64/ldbl2mpn.c: New file.
+	* sysdeps/ia64/ldbl2mpn.c: New file.
+
 2007-06-04  Jakub Jelinek  <jakub@redhat.com>
 
 	* sysdeps/ieee754/ldbl-128ibm/printf_fphex.c
diff --git a/nptl/allocatestack.c b/nptl/allocatestack.c
index c31ca808bf..76d75fef2c 100644
--- a/nptl/allocatestack.c
+++ b/nptl/allocatestack.c
@@ -949,7 +949,7 @@ __nptl_setxid (struct xid_command *cmdp)
   int cur = cmdp->cntr;
   while (cur != 0)
     {
-      lll_futex_wait (&cmdp->cntr, cur);
+      lll_private_futex_wait (&cmdp->cntr, cur);
       cur = cmdp->cntr;
     }
 
@@ -1035,7 +1035,7 @@ __wait_lookup_done (void)
 	continue;
 
       do
-	lll_futex_wait (gscope_flagp, THREAD_GSCOPE_FLAG_WAIT);
+	lll_private_futex_wait (gscope_flagp, THREAD_GSCOPE_FLAG_WAIT);
       while (*gscope_flagp == THREAD_GSCOPE_FLAG_WAIT);
     }
 
@@ -1057,7 +1057,7 @@ __wait_lookup_done (void)
 	continue;
 
       do
-	lll_futex_wait (gscope_flagp, THREAD_GSCOPE_FLAG_WAIT);
+	lll_private_futex_wait (gscope_flagp, THREAD_GSCOPE_FLAG_WAIT);
       while (*gscope_flagp == THREAD_GSCOPE_FLAG_WAIT);
     }
 
diff --git a/nptl/init.c b/nptl/init.c
index 82adeae6a6..be8359ea21 100644
--- a/nptl/init.c
+++ b/nptl/init.c
@@ -216,7 +216,7 @@ sighandler_setxid (int sig, siginfo_t *si, void *ctx)
 			__xidcmd->id[1], __xidcmd->id[2]);
 
   if (atomic_decrement_val (&__xidcmd->cntr) == 0)
-    lll_futex_wake (&__xidcmd->cntr, 1);
+    lll_private_futex_wake (&__xidcmd->cntr, 1);
 
   /* Reset the SETXID flag.  */
   struct pthread *self = THREAD_SELF;
@@ -225,7 +225,7 @@ sighandler_setxid (int sig, siginfo_t *si, void *ctx)
 
   /* And release the futex.  */
   self->setxid_futex = 1;
-  lll_futex_wake (&self->setxid_futex, 1);
+  lll_private_futex_wake (&self->setxid_futex, 1);
 }
 
 
diff --git a/nptl/lowlevellock.h b/nptl/lowlevellock.h
index 338da39990..0600e1794d 100644
--- a/nptl/lowlevellock.h
+++ b/nptl/lowlevellock.h
@@ -1,5 +1,5 @@
 /* Low level locking macros used in NPTL implementation.  Stub version.
-   Copyright (C) 2002 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2007 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
 
@@ -21,16 +21,6 @@
 #include <atomic.h>
 
 
-/* Implement generic mutex.  Basic futex syscall support is required:
-
-     lll_futex_wait(futex, value) - call sys_futex with FUTEX_WAIT
-				    and third parameter VALUE
-
-     lll_futex_wake(futex, value) - call sys_futex with FUTEX_WAKE
-				    and third parameter VALUE
-*/
-
-
 /* Mutex lock counter:
    bit 31 clear means unlocked;
    bit 31 set means locked.
@@ -66,7 +56,9 @@ __generic_mutex_lock (int *mutex)
       if (v >= 0)
 	continue;
 
-      lll_futex_wait (mutex, v);
+      lll_futex_wait (mutex, v,
+		      // XYZ check mutex flag
+		      LLL_SHARED);
     }
 }
 
@@ -82,7 +74,9 @@ __generic_mutex_unlock (int *mutex)
 
   /* There are other threads waiting for this mutex, wake one of them
      up.  */
-  lll_futex_wake (mutex, 1);
+  lll_futex_wake (mutex, 1,
+		  // XYZ check mutex flag
+		  LLL_SHARED);
 }
 
 
diff --git a/nptl/pthread_barrier_wait.c b/nptl/pthread_barrier_wait.c
index c6b563f242..e96a3e5473 100644
--- a/nptl/pthread_barrier_wait.c
+++ b/nptl/pthread_barrier_wait.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2003, 2004 Free Software Foundation, Inc.
+/* Copyright (C) 2003, 2004, 2007 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 2003.
 
@@ -45,7 +45,9 @@ pthread_barrier_wait (barrier)
       ++ibarrier->curr_event;
 
       /* Wake up everybody.  */
-      lll_futex_wake (&ibarrier->curr_event, INT_MAX);
+      lll_futex_wake (&ibarrier->curr_event, INT_MAX,
+		      // XYZ check mutex flag
+		      LLL_SHARED);
 
       /* This is the thread which finished the serialization.  */
       result = PTHREAD_BARRIER_SERIAL_THREAD;
@@ -61,7 +63,9 @@ pthread_barrier_wait (barrier)
 
       /* Wait for the event counter of the barrier to change.  */
       do
-	lll_futex_wait (&ibarrier->curr_event, event);
+	lll_futex_wait (&ibarrier->curr_event, event,
+			// XYZ check mutex flag
+			LLL_SHARED);
       while (event == ibarrier->curr_event);
     }
 
diff --git a/nptl/pthread_cond_broadcast.c b/nptl/pthread_cond_broadcast.c
index 2b8b5460f4..aec33f3bd8 100644
--- a/nptl/pthread_cond_broadcast.c
+++ b/nptl/pthread_cond_broadcast.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2003, 2004, 2006 Free Software Foundation, Inc.
+/* Copyright (C) 2003, 2004, 2006, 2007 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 2003.
 
@@ -69,7 +69,9 @@ __pthread_cond_broadcast (cond)
 	{
 	  /* The requeue functionality is not available.  */
 	wake_all:
-	  lll_futex_wake (&cond->__data.__futex, INT_MAX);
+	  lll_futex_wake (&cond->__data.__futex, INT_MAX,
+			  // XYZ check mutex flag
+			  LLL_SHARED);
 	}
 
       /* That's all.  */
diff --git a/nptl/pthread_cond_destroy.c b/nptl/pthread_cond_destroy.c
index 0b8d4119d1..8574b6118f 100644
--- a/nptl/pthread_cond_destroy.c
+++ b/nptl/pthread_cond_destroy.c
@@ -59,14 +59,18 @@ __pthread_cond_destroy (cond)
 	  && cond->__data.__mutex != (void *) ~0l)
 	{
 	  pthread_mutex_t *mut = (pthread_mutex_t *) cond->__data.__mutex;
-	  lll_futex_wake (&mut->__data.__lock, INT_MAX);
+	  lll_futex_wake (&mut->__data.__lock, INT_MAX,
+			  // XYZ check mutex flag
+			  LLL_SHARED);
 	}
 
       do
 	{
 	  lll_mutex_unlock (cond->__data.__lock);
 
-	  lll_futex_wait (&cond->__data.__nwaiters, nwaiters);
+	  lll_futex_wait (&cond->__data.__nwaiters, nwaiters,
+			  // XYZ check mutex flag
+			  LLL_SHARED);
 
 	  lll_mutex_lock (cond->__data.__lock);
 
diff --git a/nptl/pthread_cond_signal.c b/nptl/pthread_cond_signal.c
index 5a9bbcad91..a4faf41854 100644
--- a/nptl/pthread_cond_signal.c
+++ b/nptl/pthread_cond_signal.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2003, 2004 Free Software Foundation, Inc.
+/* Copyright (C) 2003, 2004, 2007 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 2003.
 
@@ -44,11 +44,15 @@ __pthread_cond_signal (cond)
 
       /* Wake one.  */
       if (! __builtin_expect (lll_futex_wake_unlock (&cond->__data.__futex, 1,
-						     1, &cond->__data.__lock),
+						     1, &cond->__data.__lock,
+						     // XYZ check mutex flag
+						     LLL_SHARED),
 						     0))
 	return 0;
 
-      lll_futex_wake (&cond->__data.__futex, 1);
+      lll_futex_wake (&cond->__data.__futex, 1,
+		      // XYZ check mutex flag
+		      LLL_SHARED);
     }
 
   /* We are done.  */
diff --git a/nptl/pthread_cond_timedwait.c b/nptl/pthread_cond_timedwait.c
index 261b4484ba..d1c29d2377 100644
--- a/nptl/pthread_cond_timedwait.c
+++ b/nptl/pthread_cond_timedwait.c
@@ -153,7 +153,9 @@ __pthread_cond_timedwait (cond, mutex, abstime)
 
       /* Wait until woken by signal or broadcast.  */
       err = lll_futex_timed_wait (&cond->__data.__futex,
-				  futex_val, &rt);
+				  futex_val, &rt,
+				  // XYZ check mutex flag
+				  LLL_SHARED);
 
       /* Disable asynchronous cancellation.  */
       __pthread_disable_asynccancel (cbuffer.oldtype);
@@ -196,7 +198,9 @@ __pthread_cond_timedwait (cond, mutex, abstime)
      and it can be successfully destroyed.  */
   if (cond->__data.__total_seq == -1ULL
       && cond->__data.__nwaiters < (1 << COND_NWAITERS_SHIFT))
-    lll_futex_wake (&cond->__data.__nwaiters, 1);
+    lll_futex_wake (&cond->__data.__nwaiters, 1,
+		    // XYZ check mutex flag
+		    LLL_SHARED);
 
   /* We are done with the condvar.  */
   lll_mutex_unlock (cond->__data.__lock);
diff --git a/nptl/pthread_cond_wait.c b/nptl/pthread_cond_wait.c
index 6e00a28f6a..e524aa6c94 100644
--- a/nptl/pthread_cond_wait.c
+++ b/nptl/pthread_cond_wait.c
@@ -71,7 +71,9 @@ __condvar_cleanup (void *arg)
   if (cbuffer->cond->__data.__total_seq == -1ULL
       && cbuffer->cond->__data.__nwaiters < (1 << COND_NWAITERS_SHIFT))
     {
-      lll_futex_wake (&cbuffer->cond->__data.__nwaiters, 1);
+      lll_futex_wake (&cbuffer->cond->__data.__nwaiters, 1,
+		      // XYZ check mutex flag
+		      LLL_SHARED);
       destroying = 1;
     }
 
@@ -80,7 +82,9 @@ __condvar_cleanup (void *arg)
 
   /* Wake everybody to make sure no condvar signal gets lost.  */
   if (! destroying)
-    lll_futex_wake (&cbuffer->cond->__data.__futex, INT_MAX);
+    lll_futex_wake (&cbuffer->cond->__data.__futex, INT_MAX,
+		    // XYZ check mutex flag
+		    LLL_SHARED);
 
   /* Get the mutex before returning unless asynchronous cancellation
      is in effect.  */
@@ -146,7 +150,9 @@ __pthread_cond_wait (cond, mutex)
       cbuffer.oldtype = __pthread_enable_asynccancel ();
 
       /* Wait until woken by signal or broadcast.  */
-      lll_futex_wait (&cond->__data.__futex, futex_val);
+      lll_futex_wait (&cond->__data.__futex, futex_val,
+		      // XYZ check mutex flag
+		      LLL_SHARED);
 
       /* Disable asynchronous cancellation.  */
       __pthread_disable_asynccancel (cbuffer.oldtype);
@@ -175,7 +181,9 @@ __pthread_cond_wait (cond, mutex)
      and it can be successfully destroyed.  */
   if (cond->__data.__total_seq == -1ULL
       && cond->__data.__nwaiters < (1 << COND_NWAITERS_SHIFT))
-    lll_futex_wake (&cond->__data.__nwaiters, 1);
+    lll_futex_wake (&cond->__data.__nwaiters, 1,
+		    // XYZ check mutex flag
+		    LLL_SHARED);
 
   /* We are done with the condvar.  */
   lll_mutex_unlock (cond->__data.__lock);
diff --git a/nptl/pthread_create.c b/nptl/pthread_create.c
index 79729ced03..b1f852dc95 100644
--- a/nptl/pthread_create.c
+++ b/nptl/pthread_create.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+/* Copyright (C) 2002,2003,2004,2005,2006,2007 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
 
@@ -385,7 +385,7 @@ start_thread (void *arg)
       /* Some other thread might call any of the setXid functions and expect
 	 us to reply.  In this case wait until we did that.  */
       do
-	lll_futex_wait (&pd->setxid_futex, 0);
+	lll_private_futex_wait (&pd->setxid_futex, 0);
       while (pd->cancelhandling & SETXID_BITMASK);
 
       /* Reset the value so that the stack can be reused.  */
diff --git a/nptl/pthread_mutex_lock.c b/nptl/pthread_mutex_lock.c
index 1c3ee4fe25..a17013bb76 100644
--- a/nptl/pthread_mutex_lock.c
+++ b/nptl/pthread_mutex_lock.c
@@ -408,7 +408,9 @@ __pthread_mutex_lock (mutex)
 		  break;
 
 		if (oldval != ceilval)
-		  lll_futex_wait (&mutex->__data.__lock, ceilval | 2);
+		  lll_futex_wait (&mutex->__data.__lock, ceilval | 2,
+				  // XYZ check mutex flag
+				  LLL_SHARED);
 	      }
 	    while (atomic_compare_and_exchange_val_acq (&mutex->__data.__lock,
 							ceilval | 2, ceilval)
diff --git a/nptl/pthread_mutex_setprioceiling.c b/nptl/pthread_mutex_setprioceiling.c
index cd13d1c14c..301fb63d21 100644
--- a/nptl/pthread_mutex_setprioceiling.c
+++ b/