/*

   * Defines a layout of L1 scratchpad memory that userspace can rely on.

   *
   * Copyright 2006-2008 Analog Devices Inc.
   *
   * Licensed under the GPL-2 or later.

   */
  
  #ifndef _L1LAYOUT_H_
  #define _L1LAYOUT_H_
  
  #include <asm/blackfin.h>

  #ifndef CONFIG_SMP

  #ifndef __ASSEMBLY__
  
  /* Data that is "mapped" into the process VM at the start of the L1 scratch
     memory, so that each process can access it at a fixed address.  Used for
     stack checking.  */
  struct l1_scratch_task_info
  {
  	/* Points to the start of the stack.  */
  	void *stack_start;
  	/* Not updated by the kernel; a user process can modify this to
  	   keep track of the lowest address of the stack pointer during its
  	   runtime.  */
  	void *lowest_sp;
  };
  
  /* A pointer to the structure in memory.  */

  #define L1_SCRATCH_TASK_INFO ((struct l1_scratch_task_info *)\
  						get_l1_scratch_start())

  
  #endif

  #endif

  
  #endif