arch/microblaze/include/asm/current.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Copyright (C) 2008-2009 Michal Simek <monstr@monstr.eu>
   4  * Copyright (C) 2008-2009 PetaLogix
   5  * Copyright (C) 2006 Atmark Techno, Inc.
   6  */
   7
   8 #ifndef _ASM_MICROBLAZE_CURRENT_H
   9 #define _ASM_MICROBLAZE_CURRENT_H
  10
  11 /*
  12  * Register used to hold the current task pointer while in the kernel.
  13  * Any `call clobbered' register without a special meaning should be OK,
  14  * but check asm/microblaze/kernel/entry.S to be sure.
  15  */
  16 #define CURRENT_TASK    r31
  17 # ifndef __ASSEMBLY__
  18 /*
  19  * Dedicate r31 to keeping the current task pointer
  20  */
  21 register struct task_struct *current asm("r31");
  22
  23 # define get_current()  current
  24 # endif /* __ASSEMBLY__ */
  25
  26 #endif /* _ASM_MICROBLAZE_CURRENT_H */