(pthread_barrier_wait): Don't save, load, and restore %esi for last thread.
[kopensolaris-gnu/glibc.git] / nptl / sysdeps / unix / sysv / linux / i386 / i486 / pthread_cond_broadcast.S
index fffef03..34bf95a 100644 (file)
@@ -70,13 +70,24 @@ __pthread_cond_broadcast:
 3:     movl    %ecx, (%ebx)
        movl    %eax, 4(%ebx)
 
+       /* Unlock.  */
+       LOCK
+       decl    cond_lock-wakeup_seq(%ebx)
+       jne     7f
+
        /* Wake up all threads.  */
-       movl    $FUTEX_WAKE, %ecx
+8:     movl    $FUTEX_WAKE, %ecx
        xorl    %esi, %esi
        movl    $SYS_futex, %eax
        movl    $0x7fffffff, %edx
        ENTER_KERNEL
 
+       xorl    %eax, %eax
+       popl    %ebx
+       popl    %esi
+       ret
+
+       .align  16
        /* Unlock.  */
 4:     LOCK
        decl    cond_lock-wakeup_seq(%ebx)
@@ -98,10 +109,14 @@ __pthread_cond_broadcast:
        jmp     2b
 
        /* Unlock in loop requires waekup.  */
-5:
-       leal    cond_lock-wakeup_seq(%ebx), %eax
+5:     leal    cond_lock-wakeup_seq(%ebx), %eax
        call    __lll_mutex_unlock_wake
        jmp     6b
+
+       /* Unlock in loop requires waekup.  */
+7:     leal    cond_lock-wakeup_seq(%ebx), %eax
+       call    __lll_mutex_unlock_wake
+       jmp     8b
        .size   __pthread_cond_broadcast, .-__pthread_cond_broadcast
 versioned_symbol (libpthread, __pthread_cond_broadcast, pthread_cond_broadcast,
                  GLIBC_2_3_2)