summaryrefslogtreecommitdiff
path: root/libpthread/nptl/sysdeps/arm
diff options
context:
space:
mode:
Diffstat (limited to 'libpthread/nptl/sysdeps/arm')
-rw-r--r--libpthread/nptl/sysdeps/arm/tls.h28
1 files changed, 24 insertions, 4 deletions
diff --git a/libpthread/nptl/sysdeps/arm/tls.h b/libpthread/nptl/sysdeps/arm/tls.h
index 29200a1d2..0ca597ac8 100644
--- a/libpthread/nptl/sysdeps/arm/tls.h
+++ b/libpthread/nptl/sysdeps/arm/tls.h
@@ -1,5 +1,5 @@
/* Definition for thread-local data handling. NPTL/ARM version.
- Copyright (C) 2005 Free Software Foundation, Inc.
+ Copyright (C) 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
@@ -50,9 +50,6 @@ typedef union dtv
/* Signal that TLS support is available. */
#define USE_TLS 1
-/* Like all other modern NPTL ports, ARM uses forced unwinding. */
-#define HAVE_FORCED_UNWIND
-
#ifndef __ASSEMBLER__
/* Get system call information. */
@@ -134,6 +131,29 @@ typedef struct
is not available. */
#define TLS_INIT_TP_EXPENSIVE 1
+/* 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, LLL_PRIVATE); \
+ } \
+ 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 */