sysdeps/unix/sysv/linux/nios2/sys/ucontext.h

   1 /* struct ucontext definition, Nios II version.
   2    Copyright (C) 2015-2017 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 /* System V/Nios II ABI compliant context switching support.  */
  20
  21 #ifndef _SYS_UCONTEXT_H
  22 #define _SYS_UCONTEXT_H 1
  23
  24 #include <features.h>
  25 #include <signal.h>
  26
  27 /* We need the signal context definitions even if they are not exposed
  28    by <signal.h>.  */
  29 #include <bits/sigcontext.h>
  30 #include <bits/sigstack.h>
  31
  32
  33 /* These definitions must be in sync with the kernel.  */
  34
  35 #define MCONTEXT_VERSION 2
  36
  37 /* Context to describe whole processor state.  */
  38 typedef struct mcontext
  39   {
  40     int version;
  41     unsigned long regs[32];
  42   } mcontext_t;
  43
  44 /* Userlevel context.  */
  45 typedef struct ucontext
  46   {
  47     unsigned long uc_flags;
  48     struct ucontext *uc_link;
  49     stack_t uc_stack;
  50     mcontext_t uc_mcontext;
  51     __sigset_t uc_sigmask;
  52   } ucontext_t;
  53
  54 #endif /* sys/ucontext.h */