From a4b5177ca83ca97c562a7138923dafe0cb92d1a0 Mon Sep 17 00:00:00 2001
From: Marcin Kościelnicki <koriakin@0x04.net>
Date: Thu, 14 Jan 2016 16:48:55 +0100
Subject: Add __private_ss to s390 struct tcbhead.

Preparation for gcc -fsplit-stack support (gcc bug #68191).  The new
field is basically identical to the one on x86.  Its TCB offset needs
to be constant, as it'll be hardcoded in gcc.

ChangeLog:

	* sysdeps/s390/nptl/tls.h (struct tcbhead_t): Add __private_ss field.
---
 sysdeps/s390/nptl/tls.h | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'sysdeps')

diff --git a/sysdeps/s390/nptl/tls.h b/sysdeps/s390/nptl/tls.h
index bc86931d81..e4c3ec7830 100644
--- a/sysdeps/s390/nptl/tls.h
+++ b/sysdeps/s390/nptl/tls.h
@@ -53,7 +53,11 @@ typedef struct
   int gscope_flag;
 #ifndef __ASSUME_PRIVATE_FUTEX
   int private_futex;
+#else
+  int __glibc_reserved1;
 #endif
+  /* GCC split stack support.  */
+  void *__private_ss;
 } tcbhead_t;
 
 # ifndef __s390x__
-- 
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