/*
 * include/asm-v850/processor.h
 *
 *  Copyright (C) 2001,02,03  NEC Electronics Corporation
 *  Copyright (C) 2001,02,03  Miles Bader <miles@gnu.org>
 *
 * This file is subject to the terms and conditions of the GNU General
 * Public License.  See the file COPYING in the main directory of this
 * archive for more details.
 *
 * Written by Miles Bader <miles@gnu.org>
 */

#ifndef __V850_PROCESSOR_H__
#define __V850_PROCESSOR_H__

#ifndef __ASSEMBLY__ /* <linux/thread_info.h> is not asm-safe.  */
#include <linux/thread_info.h>
#endif

#include <linux/compiler.h>
#include <asm/ptrace.h>
#include <asm/entry.h>

/* Some code expects `segment' stuff to be defined here.  */
#include <asm/segment.h>


/*
 * The only places this is used seem to be horrible bletcherous kludges,
 * so we just define it to be as large as possible.
 */
#define TASK_SIZE	(0xFFFFFFFF)

/*
 * This decides where the kernel will search for a free chunk of vm
 * space during mmap's.  We won't be using it.
 */
#define TASK_UNMAPPED_BASE	0


#ifndef __ASSEMBLY__


/*
 * Default implementation of macro that returns current
 * instruction pointer ("program counter").
 */
#define current_text_addr()	({ __label__ _l; _l: &&_l;})

/* If you change this, you must change the associated assembly-languages
   constants defined below, THREAD_*.  */
struct thread_struct {
	/* kernel stack pointer (must be first field in structure) */
	unsigned long  ksp;
};

#define INIT_THREAD { sizeof init_stack + (unsigned long)init_stack }


/* Do necessary setup to start up a newly executed thread.  */
static inline void start_thread (struct pt_regs *regs,
				 unsigned long pc, unsigned long usp)
{
	regs->pc = pc;
	regs->gpr[GPR_SP] = usp;
	regs->kernel_mode = 0;
}

/* Free all resources held by a thread. */
static inline void release_thread (struct task_struct *dead_task)
{
}

/* Prepare to copy thread state - unlazy all lazy status */
#define prepare_to_copy(tsk)	do { } while (0)

extern int kernel_thread (int (*fn)(void *), void * arg, unsigned long flags);

/* Free current thread data structures etc.  */
static inline void exit_thread (void)
{
}


/* Return the registers saved during context-switch by the currently
   not-running thread T.  Note that this only includes some registers!