sysdeps/unix/sysv/linux/or1k/sys/ucontext.h

   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 */