1  /* ucontext_t definition, OpenRISC version.
       2     Copyright (C) 2022-2023 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     <https://www.gnu.org/licenses/>.  */
      18  
      19  /* System V/OpenRISC compliant context switching support.  */
      20  
      21  #ifndef _SYS_UCONTEXT_H
      22  #define _SYS_UCONTEXT_H	1
      23  
      24  #include <features.h>
      25  
      26  #include <bits/types/sigset_t.h>
      27  #include <bits/types/stack_t.h>
      28  
      29  /* Number of general registers.  */
      30  #define __NGREG	32
      31  #ifdef __USE_MISC
      32  # define NGREG	__NGREG
      33  #endif
      34  
      35  /* Context to describe whole processor state.  */
      36  typedef struct
      37    {
      38      unsigned long int __gprs[__NGREG];
      39      unsigned long int __pc;
      40      unsigned long int __sr;
      41    } mcontext_t;
      42  
      43  /* Userlevel context.  */
      44  typedef struct ucontext_t
      45    {
      46      unsigned long int __uc_flags;
      47      struct ucontext_t *uc_link;
      48      stack_t uc_stack;
      49      mcontext_t uc_mcontext;
      50      sigset_t uc_sigmask;
      51    } ucontext_t;
      52  
      53  #endif /* sys/ucontext.h */