arch/microblaze/include/asm/entry.h

   1 /*
   2  * Definitions used by low-level trap handlers
   3  *
   4  * Copyright (C) 2008 Michal Simek
   5  * Copyright (C) 2007 - 2008 PetaLogix
   6  * Copyright (C) 2007 John Williams <john.williams@petalogix.com>
   7  *
   8  * This file is subject to the terms and conditions of the GNU General
   9  * Public License. See the file COPYING in the main directory of this
  10  * archive for more details.
  11  */
  12
  13 #ifndef _ASM_MICROBLAZE_ENTRY_H
  14 #define _ASM_MICROBLAZE_ENTRY_H
  15
  16 #include <asm/percpu.h>
  17 #include <asm/ptrace.h>
  18
  19 /*
  20  * These are per-cpu variables required in entry.S, among other
  21  * places
  22  */
  23
  24 #define PER_CPU(var) per_cpu__##var
  25
  26 # ifndef __ASSEMBLY__
  27 DECLARE_PER_CPU(unsigned int, KSP); /* Saved kernel stack pointer */
  28 DECLARE_PER_CPU(unsigned int, KM); /* Kernel/user mode */
  29 DECLARE_PER_CPU(unsigned int, ENTRY_SP); /* Saved SP on kernel entry */
  30 DECLARE_PER_CPU(unsigned int, R11_SAVE); /* Temp variable for entry */
  31 DECLARE_PER_CPU(unsigned int, CURRENT_SAVE); /* Saved current pointer */
  32 # endif /* __ASSEMBLY__ */
  33
  34 /* noMMU hasn't any space for args */
  35 # define STATE_SAVE_ARG_SPACE   (0)
  36
  37 #endif /* _ASM_MICROBLAZE_ENTRY_H */