78 lines
2.3 KiB
C
78 lines
2.3 KiB
C
/* Copyright (C) 2000, 2001 Free Software Foundation, Inc.
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Contributed by Denis Joseph Barrow (djbarrow@de.ibm.com).
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#ifndef _SYS_UCONTEXT_H
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#define _SYS_UCONTEXT_H 1
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/* Forward definition to avoid parse errors */
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struct ucontext;
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typedef struct ucontext ucontext_t;
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#include <features.h>
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#include <signal.h>
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/* We need the signal context definitions even if they are not used
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included in <signal.h>. */
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#include <bits/sigcontext.h>
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/* Type for a general-purpose register. */
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typedef unsigned long greg_t;
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/* And the whole bunch of them. We should have used `struct s390_regs',
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but to avoid name space pollution and since the tradition says that
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the register set is an array, we make gregset_t a simple array
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that has the same size as s390_regs. */
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#define NGREG 36
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#define NUM_FPRS 16
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/* Must match kernels psw_t alignment */
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typedef greg_t gregset_t[NGREG] __attribute__ ((aligned(8)));
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typedef union
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{
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double d;
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float f;
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} fpreg_t;
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/* Register set for the floating-point registers. */
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typedef struct {
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unsigned int fpc;
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fpreg_t fprs[NUM_FPRS];
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} fpregset_t;
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/* Context to describe whole processor state. */
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typedef struct
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{
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int version;
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gregset_t gregs;
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fpregset_t fpregs;
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} mcontext_t;
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/* Userlevel context. */
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struct ucontext
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{
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unsigned long int uc_flags;
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struct ucontext *uc_link;
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__sigset_t uc_sigmask;
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stack_t uc_stack;
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mcontext_t uc_mcontext;
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long int uc_filler[170];
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};
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#endif /* sys/ucontext.h */
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