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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 */