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diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/sys/ucontext.h b/sysdeps/unix/sysv/linux/s390/s390-32/sys/ucontext.h
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+++ b/sysdeps/unix/sysv/linux/s390/s390-32/sys/ucontext.h
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+/* Copyright (C) 2000, 2001 Free Software Foundation, Inc.
+   Contributed by Denis Joseph Barrow (djbarrow@de.ibm.com).
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _SYS_UCONTEXT_H
+#define _SYS_UCONTEXT_H	1
+/* Forward definition to avoid parse errors */
+struct ucontext;
+typedef struct ucontext ucontext_t;
+#include <features.h>
+#include <signal.h>
+
+/* We need the signal context definitions even if they are not used
+   included in <signal.h>.  */
+#include <bits/sigcontext.h>
+
+
+/* Type for a general-purpose register.  */
+typedef unsigned long greg_t;
+
+/* And the whole bunch of them.  We should have used `struct s390_regs',
+   but to avoid name space pollution and since the tradition says that
+   the register set is an array, we make gregset_t a simple array
+   that has the same size as s390_regs. */
+#define NGREG 36
+#define NUM_FPRS 16
+typedef greg_t gregset_t[NGREG];
+
+typedef union
+{
+  double  d;
+  float   f;
+} fpreg_t;
+
+/* Register set for the floating-point registers.  */
+typedef struct {
+  unsigned int fpc;
+  fpreg_t fprs[NUM_FPRS];
+} fpregset_t;
+
+/* Context to describe whole processor state.  */
+typedef struct
+  {
+    int version;
+    gregset_t    gregs;
+    fpregset_t   fpregs;
+  } mcontext_t;
+
+/* Userlevel context.  */
+struct ucontext
+  {
+    unsigned long int uc_flags;
+    struct ucontext *uc_links;
+    __sigset_t uc_sigmask;
+    stack_t uc_stack;
+    mcontext_t uc_mcontext;
+    long int uc_filler[170];
+  };
+
+
+#endif /* sys/ucontext.h */