ucontext.h 1.8 KB

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  1. /* Copyright (C) 1998-2016 Free Software Foundation, Inc.
  2. This file is part of the GNU C Library.
  3. The GNU C Library is free software; you can redistribute it and/or
  4. modify it under the terms of the GNU Lesser General Public
  5. License as published by the Free Software Foundation; either
  6. version 2.1 of the License, or (at your option) any later version.
  7. The GNU C Library is distributed in the hope that it will be useful,
  8. but WITHOUT ANY WARRANTY; without even the implied warranty of
  9. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  10. Lesser General Public License for more details.
  11. You should have received a copy of the GNU Lesser General Public
  12. License along with the GNU C Library; if not, see
  13. <http://www.gnu.org/licenses/>. */
  14. /* System V/AArch64 ABI compliant context switching support. */
  15. #ifndef _SYS_UCONTEXT_H
  16. #define _SYS_UCONTEXT_H 1
  17. #include <features.h>
  18. #include <signal.h>
  19. #include <sys/procfs.h>
  20. /* We need the signal context definitions even if they are not used
  21. included in <signal.h>. */
  22. #include <bits/sigcontext.h>
  23. typedef elf_greg_t greg_t;
  24. /* Container for all general registers. */
  25. typedef elf_gregset_t gregset_t;
  26. /* Structure to describe FPU registers. */
  27. typedef elf_fpregset_t fpregset_t;
  28. /* Context to describe whole processor state. This only describes
  29. the core registers; coprocessor registers get saved elsewhere
  30. (e.g. in uc_regspace, or somewhere unspecified on the stack
  31. during non-RT signal handlers). */
  32. typedef struct sigcontext mcontext_t;
  33. /* Userlevel context. */
  34. typedef struct ucontext_t
  35. {
  36. unsigned long uc_flags;
  37. struct ucontext_t *uc_link;
  38. stack_t uc_stack;
  39. __sigset_t uc_sigmask;
  40. unsigned char __reserved[128];
  41. mcontext_t uc_mcontext;
  42. } ucontext_t;
  43. #endif /* sys/ucontext.h */