#ifndef __ASM_SH64_THREAD_INFO_H
  #define __ASM_SH64_THREAD_INFO_H
  
  /*
   * SuperH 5 version
   * Copyright (C) 2003  Paul Mundt
   */
  
  #ifdef __KERNEL__
  
  #ifndef __ASSEMBLY__
  #include <asm/registers.h>
  
  /*
   * low level task data that entry.S needs immediate access to
   * - this struct should fit entirely inside of one cache line
   * - this struct shares the supervisor stack pages
   * - if the contents of this structure are changed, the assembly constants must also be changed
   */
  struct thread_info {
  	struct task_struct	*task;		/* main task structure */
  	struct exec_domain	*exec_domain;	/* execution domain */
  	unsigned long		flags;		/* low level flags */
  	/* Put the 4 32-bit fields together to make asm offsetting easier. */

  	int			preempt_count;	/* 0 => preemptable, <0 => BUG */

  	__u16			cpu;
  
  	mm_segment_t		addr_limit;
  	struct restart_block	restart_block;
  
  	__u8			supervisor_stack[0];
  };
  
  /*
   * macros/functions for gaining access to the thread information structure
   */
  #define INIT_THREAD_INFO(tsk)			\
  {						\
  	.task		= &tsk,			\
  	.exec_domain	= &default_exec_domain,	\
  	.flags		= 0,			\
  	.cpu		= 0,			\
  	.preempt_count	= 1,			\
  	.addr_limit     = KERNEL_DS,            \
  	.restart_block	= {			\
  		.fn = do_no_restart_syscall,	\
  	},					\
  }
  
  #define init_thread_info	(init_thread_union.thread_info)
  #define init_stack		(init_thread_union.stack)
  
  /* how to get the thread information struct from C */
  static inline struct thread_info *current_thread_info(void)
  {
  	struct thread_info *ti;
  
  	__asm__ __volatile__ ("getcon " __KCR0 ", %0
  \t" : "=r" (ti));
  
  	return ti;
  }
  
  /* thread information allocation */
  
  
  
  #define alloc_thread_info(ti) ((struct thread_info *) __get_free_pages(GFP_KERNEL,1))
  #define free_thread_info(ti) free_pages((unsigned long) (ti), 1)

  
  #endif /* __ASSEMBLY__ */
  
  #define THREAD_SIZE  8192

  #define PREEMPT_ACTIVE		0x10000000

  
  /* thread information flags */
  #define TIF_SYSCALL_TRACE	0	/* syscall trace active */
  #define TIF_SIGPENDING		2	/* signal pending */
  #define TIF_NEED_RESCHED	3	/* rescheduling necessary */
  #define TIF_MEMDIE		4

  #define TIF_RESTORE_SIGMASK	5	/* Restore signal mask in do_signal */

  #define _TIF_SYSCALL_TRACE	(1 << TIF_SYSCALL_TRACE)
  #define _TIF_SIGPENDING		(1 << TIF_SIGPENDING)
  #define _TIF_NEED_RESCHED	(1 << TIF_NEED_RESCHED)
  #define _TIF_MEMDIE		(1 << TIF_MEMDIE)
  #define _TIF_RESTORE_SIGMASK	(1 << TIF_RESTORE_SIGMASK)

  
  #endif /* __KERNEL__ */
  
  #endif /* __ASM_SH64_THREAD_INFO_H */