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Diffstat (limited to 'nptl/sysdeps/i386/tls.h')
-rw-r--r--nptl/sysdeps/i386/tls.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/nptl/sysdeps/i386/tls.h b/nptl/sysdeps/i386/tls.h
index c0331140f4..65566ff7a7 100644
--- a/nptl/sysdeps/i386/tls.h
+++ b/nptl/sysdeps/i386/tls.h
@@ -49,6 +49,7 @@ typedef struct
   void *self;		/* Pointer to the thread descriptor.  */
   int multiple_threads;
   uintptr_t sysinfo;
+  uintptr_t stack_guard;
 } tcbhead_t;
 
 # define TLS_MULTIPLE_THREADS_IN_TCB 1
@@ -416,6 +417,14 @@ union user_desc_init
      __res; })
 
 
+/* Set the stack guard field in TCB head.  */
+#define THREAD_SET_STACK_GUARD(value) \
+  THREAD_SETMEM (THREAD_SELF, header.stack_guard, value)
+#define THREAD_COPY_STACK_GUARD(descr) \
+  ((descr)->header.stack_guard						      \
+   = THREAD_GETMEM (THREAD_SELF, header.stack_guard))
+
+
 #endif /* __ASSEMBLER__ */
 
 #endif	/* tls.h */