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-rw-r--r--nptl/sysdeps/unix/sysv/linux/sparc/bits/pthreadtypes.h17
1 files changed, 13 insertions, 4 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/sparc/bits/pthreadtypes.h b/nptl/sysdeps/unix/sysv/linux/sparc/bits/pthreadtypes.h
index 3c5a289445..0f4691025e 100644
--- a/nptl/sysdeps/unix/sysv/linux/sparc/bits/pthreadtypes.h
+++ b/nptl/sysdeps/unix/sysv/linux/sparc/bits/pthreadtypes.h
@@ -1,5 +1,5 @@
 /* Machine-specific pthread type layouts.  SPARC version.
-   Copyright (C) 2003, 2004 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2004, 2005 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
 
@@ -60,7 +60,7 @@ typedef union
 
 /* Data structures for mutex handling.  The structure of the attribute
    type is deliberately not exposed.  */
-typedef union
+typedef union __pthread_mutex_u
 {
   struct
   {
@@ -73,10 +73,19 @@ typedef union
     /* KIND must stay at this position in the structure to maintain
        binary compatibility.  */
     int __kind;
-#if __WORDSIZE != 64
+#if __WORDSIZE == 64
+    int __spins;
+    union __pthread_mutex_u *__next;
+    union __pthread_mutex_u *__prev;
+# define __PTHREAD_MUTEX_HAVE_PREV	1
+#else
     unsigned int __nusers;
+    union
+    {
+      int __spins;
+      union __pthread_mutex_u *__next;
+    };
 #endif
-    int __spins;
   } __data;
   char __size[__SIZEOF_PTHREAD_MUTEX_T];
   long int __align;