1  /* struct ucontext definition.
       2     Copyright (C) 2022-2023 Free Software Foundation, Inc.
       3  
       4     This file is part of the GNU C Library.
       5  
       6     The GNU C Library is free software; you can redistribute it and/or
       7     modify it under the terms of the GNU Lesser General Public
       8     License as published by the Free Software Foundation; either
       9     version 2.1 of the License, or (at your option) any later version.
      10  
      11     The GNU C Library is distributed in the hope that it will be useful,
      12     but WITHOUT ANY WARRANTY; without even the implied warranty of
      13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      14     Lesser General Public License for more details.
      15  
      16     You should have received a copy of the GNU Lesser General Public
      17     License along with the GNU C Library.  If not, see
      18     <https://www.gnu.org/licenses/>.  */
      19  
      20  /* Don't rely on this, the interface is currently messed up and may need to
      21     be broken to be fixed.  */
      22  #ifndef _SYS_UCONTEXT_H
      23  #define _SYS_UCONTEXT_H 1
      24  
      25  #include <features.h>
      26  
      27  #include <bits/types/sigset_t.h>
      28  #include <bits/types/stack_t.h>
      29  
      30  #ifdef __USE_MISC
      31  #define LARCH_NGREG 32
      32  
      33  #define LARCH_REG_RA 1
      34  #define LARCH_REG_SP 3
      35  #define LARCH_REG_S0 23
      36  #define LARCH_REG_S1 24
      37  #define LARCH_REG_A0 4
      38  #define LARCH_REG_S2 25
      39  #define LARCH_REG_NARGS 8
      40  
      41  typedef unsigned long int greg_t;
      42  /* Container for all general registers.  */
      43  typedef greg_t gregset_t[32];
      44  #endif
      45  
      46  typedef struct mcontext_t
      47  {
      48    unsigned long long __pc;
      49    unsigned long long __gregs[32];
      50    unsigned int __flags;
      51    unsigned long long __extcontext[0] __attribute__((__aligned__(16)));
      52  } mcontext_t;
      53  
      54  /* Userlevel context.  */
      55  typedef struct ucontext_t
      56  {
      57    unsigned long int __uc_flags;
      58    struct ucontext_t *uc_link;
      59    stack_t uc_stack;
      60    sigset_t uc_sigmask;
      61    mcontext_t uc_mcontext;
      62  } ucontext_t;
      63  
      64  #endif /* sys/ucontext.h */