current.h 850 B

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  1. /*
  2. * Copyright (C) 2008-2009 Michal Simek <monstr@monstr.eu>
  3. * Copyright (C) 2008-2009 PetaLogix
  4. * Copyright (C) 2006 Atmark Techno, Inc.
  5. *
  6. * This file is subject to the terms and conditions of the GNU General Public
  7. * License. See the file "COPYING" in the main directory of this archive
  8. * for more details.
  9. */
  10. #ifndef _ASM_MICROBLAZE_CURRENT_H
  11. #define _ASM_MICROBLAZE_CURRENT_H
  12. /*
  13. * Register used to hold the current task pointer while in the kernel.
  14. * Any `call clobbered' register without a special meaning should be OK,
  15. * but check asm/microblaze/kernel/entry.S to be sure.
  16. */
  17. #define CURRENT_TASK r31
  18. # ifndef __ASSEMBLY__
  19. /*
  20. * Dedicate r31 to keeping the current task pointer
  21. */
  22. register struct task_struct *current asm("r31");
  23. # define get_current() current
  24. # endif /* __ASSEMBLY__ */
  25. #endif /* _ASM_MICROBLAZE_CURRENT_H */