.

[thirdparty/glibc.git] / nptl / sysdeps / sh / tls.h

diff --git a/nptl/sysdeps/sh/tls.h b/nptl/sysdeps/sh/tls.h
index d9aa1073b8d6079623cce51707be690cd29303bb..2873fe73a83bbaf674d97021713d71e42f1e6617 100644 (file)
--- a/nptl/sysdeps/sh/tls.h
+++ b/nptl/sysdeps/sh/tls.h
@@ -1,5 +1,5 @@
 /* Definition for thread-local data handling.  NPTL/SH version.
-   Copyright (C) 2003, 2005, 2006 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2005, 2007 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
@@ -56,6 +56,9 @@ typedef struct
 # error "TLS support is required."
 #endif
 
+/* Signal that TLS support is available.  */
+# define USE_TLS       1
+
 #ifndef __ASSEMBLER__
 
 /* Get system call information.  */
@@ -150,6 +153,29 @@ typedef struct
      __asm __volatile ("stc gbr,%0" : "=r" (__tcbp));                        \
      ((tcbhead_t *) (descr + 1))->pointer_guard        = __tcbp->pointer_guard;})
 
+/* Get and set the global scope generation counter in struct pthread.  */
+#define THREAD_GSCOPE_FLAG_UNUSED 0
+#define THREAD_GSCOPE_FLAG_USED   1
+#define THREAD_GSCOPE_FLAG_WAIT   2
+#define THREAD_GSCOPE_RESET_FLAG() \
+  do                                                                        \
+    { int __res                                                                     \
+       = atomic_exchange_rel (&THREAD_SELF->header.gscope_flag,             \
+                              THREAD_GSCOPE_FLAG_UNUSED);                   \
+      if (__res == THREAD_GSCOPE_FLAG_WAIT)                                 \
+       lll_futex_wake (&THREAD_SELF->header.gscope_flag, 1);                \
+    }                                                                       \
+  while (0)
+#define THREAD_GSCOPE_SET_FLAG() \
+  do                                                                        \
+    {                                                                       \
+      THREAD_SELF->header.gscope_flag = THREAD_GSCOPE_FLAG_USED;            \
+      atomic_write_barrier ();                                              \
+    }                                                                       \
+  while (0)
+#define THREAD_GSCOPE_WAIT() \
+  GL(dl_wait_lookup_done) ()
+
 #endif /* __ASSEMBLER__ */
 
 #endif /* tls.h */