sysdeps/unix/sysv/linux/aarch64/sys/ucontext.h

   1 /* Copyright (C) 1998-2015 Free Software Foundation, Inc.
   2
   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/AArch64 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 #include <sys/procfs.h>
  27
  28 /* We need the signal context definitions even if they are not used
  29    included in <signal.h>.  */
  30 #include <bits/sigcontext.h>
  31
  32 typedef int greg_t;
  33
  34 /* Container for all general registers.  */
  35 typedef elf_gregset_t gregset_t;
  36
  37 /* Structure to describe FPU registers.  */
  38 typedef elf_fpregset_t  fpregset_t;
  39
  40 /* Context to describe whole processor state.  This only describes
  41    the core registers; coprocessor registers get saved elsewhere
  42    (e.g. in uc_regspace, or somewhere unspecified on the stack
  43    during non-RT signal handlers).  */
  44 typedef struct sigcontext mcontext_t;
  45
  46 /* Userlevel context.  */
  47 typedef struct ucontext
  48   {
  49     unsigned long uc_flags;
  50     struct ucontext *uc_link;
  51     stack_t uc_stack;
  52     __sigset_t uc_sigmask;
  53     mcontext_t uc_mcontext;
  54   } ucontext_t;
  55
  56 #endif /* sys/ucontext.h */