libc/sysdeps/linux/aarch64/sys/ucontext.h

   1 /* Copyright (C) 1998-2016 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
  27 #include <sys/procfs.h>
  28
  29 typedef elf_greg_t greg_t;
  30
  31 /* Container for all general registers.  */
  32 typedef elf_gregset_t gregset_t;
  33
  34 /* Structure to describe FPU registers.  */
  35 typedef elf_fpregset_t  fpregset_t;
  36
  37 /* Context to describe whole processor state.  This only describes
  38    the core registers; coprocessor registers get saved elsewhere
  39    (e.g. in uc_regspace, or somewhere unspecified on the stack
  40    during non-RT signal handlers).  */
  41 typedef struct sigcontext mcontext_t;
  42
  43 /* Userlevel context.  */
  44 typedef struct ucontext
  45   {
  46     unsigned long uc_flags;
  47     struct ucontext *uc_link;
  48     stack_t uc_stack;
  49     __sigset_t uc_sigmask;
  50     mcontext_t uc_mcontext;
  51   } ucontext_t;
  52
  53 #endif /* sys/ucontext.h */