sh: Fix up user_fpu_struct typo for SH-5.

/*

 * This program is used to generate definitions needed by

 * assembly language modules.

 *

 * We use the technique used in the OSF Mach kernel code:

 * generate asm statements containing #defines,

 * compile this file to assembler, and then extract the

 * #defines from the assembly-language output.

 */

#include <linux/stddef.h>

#include <linux/types.h>

#include <linux/mm.h>

#include <asm/thread_info.h>

#define DEFINE(sym, val) \

        asm volatile("\n->" #sym " %0 " #val : : "i" (val))

#define BLANK() asm volatile("\n->" : : )

int main(void)

{

	/* offsets into the thread_info struct */

	DEFINE(TI_TASK,		offsetof(struct thread_info, task));

	DEFINE(TI_EXEC_DOMAIN,	offsetof(struct thread_info, exec_domain));

	DEFINE(TI_FLAGS,	offsetof(struct thread_info, flags));

	DEFINE(TI_PRE_COUNT,	offsetof(struct thread_info, preempt_count));

	DEFINE(TI_CPU,		offsetof(struct thread_info, cpu));

	DEFINE(TI_ADDR_LIMIT,	offsetof(struct thread_info, addr_limit));

	DEFINE(TI_RESTART_BLOCK,offsetof(struct thread_info, restart_block));

	return 0;

}

/*

 * 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.

 *

 * arch/sh64/kernel/init_task.c

 *

 * Copyright (C) 2000, 2001  Paolo Alberelli

 * Copyright (C) 2003  Paul Mundt

 *

 */

#include <linux/rwsem.h>

#include <linux/mm.h>

#include <linux/sched.h>

#include <linux/init_task.h>

#include <linux/mqueue.h>

#include <linux/fs.h>

#include <asm/uaccess.h>

#include <asm/pgtable.h>

static struct fs_struct init_fs = INIT_FS;

static struct files_struct init_files = INIT_FILES;

static struct signal_struct init_signals = INIT_SIGNALS(init_signals);

static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);

struct mm_struct init_mm = INIT_MM(init_mm);

struct pt_regs fake_swapper_regs;

/*

 * Initial thread structure.

 *

 * We need to make sure that this is THREAD_SIZE-byte aligned due

 * to the way process stacks are handled. This is done by having a

 * special "init_task" linker map entry..

 */

union thread_union init_thread_union

	__attribute__((__section__(".data.init_task"))) =

		{ INIT_THREAD_INFO(init_task) };

/*

 * Initial task structure.

 *

 * All other task structs will be allocated on slabs in fork.c

 */

struct task_struct init_task = INIT_TASK(init_task);

/*

 * Just taken from alpha implementation.

 * This can't work well, perhaps.

 */

/*

 *  Generic semaphore code. Buyer beware. Do your own

 * specific changes in <asm/semaphore-helper.h>

 */

#include <linux/errno.h>

#include <linux/rwsem.h>

#include <linux/sched.h>

#include <linux/wait.h>

#include <linux/init.h>

#include <asm/semaphore.h>

#include <asm/semaphore-helper.h>

spinlock_t semaphore_wake_lock;

/*

 * Semaphores are implemented using a two-way counter:

 * The "count" variable is decremented for each process

 * that tries to sleep, while the "waking" variable is

 * incremented when the "up()" code goes to wake up waiting

 * processes.

 *

 * Notably, the inline "up()" and "down()" functions can

 * efficiently test if they need to do any extra work (up

 * needs to do something only if count was negative before

 * the increment operation.

 *

 * waking_non_zero() (from asm/semaphore.h) must execute

 * atomically.

 *

 * When __up() is called, the count was negative before

 * incrementing it, and we need to wake up somebody.

 *

 * This routine adds one to the count of processes that need to

 * wake up and exit.  ALL waiting processes actually wake up but

 * only the one that gets to the "waking" field first will gate

 * through and acquire the semaphore.  The others will go back

 * to sleep.

 *

 * Note that these functions are only called when there is

 * contention on the lock, and as such all this is the

 * "non-critical" part of the whole semaphore business. The

 * critical part is the inline stuff in <asm/semaphore.h>

 * where we want to avoid any extra jumps and calls.

 */

void __up(struct semaphore *sem)

{

	wake_one_more(sem);

	wake_up(&sem->wait);

}

/*

 * Perform the "down" function.  Return zero for semaphore acquired,

 * return negative for signalled out of the function.

 *

 * If called from __down, the return is ignored and the wait loop is

 * not interruptible.  This means that a task waiting on a semaphore

 * using "down()" cannot be killed until someone does an "up()" on

 * the semaphore.

 *

 * If called from __down_interruptible, the return value gets checked

 * upon return.  If the return value is negative then the task continues

 * with the negative value in the return register (it can be tested by

 * the caller).

 *

 * Either form may be used in conjunction with "up()".

 *

 */

#define DOWN_VAR				\

	struct task_struct *tsk = current;	\

	wait_queue_t wait;			\

	init_waitqueue_entry(&wait, tsk);

#define DOWN_HEAD(task_state)						\

									\

									\

	tsk->state = (task_state);					\

	add_wait_queue(&sem->wait, &wait);				\

									\

	/*								\

	 * Ok, we're set up.  sem->count is known to be less than zero	\

	 * so we must wait.						\

	 *								\

	 * We can let go the lock for purposes of waiting.		\

	 * We re-acquire it after awaking so as to protect		\

	 * all semaphore operations.					\

	 *								\

	 * If "up()" is called before we call waking_non_zero() then	\

	 * we will catch it right away.  If it is called later then	\

	 * we will have to go through a wakeup cycle to catch it.	\

	 *								\

	 * Multiple waiters contend for the semaphore lock to see	\

	 * who gets to gate through and who has to wait some more.	\

	 */								\

	for (;;) {

#define DOWN_TAIL(task_state)			\

		tsk->state = (task_state);	\

	}					\

	tsk->state = TASK_RUNNING;		\

	remove_wait_queue(&sem->wait, &wait);

void __sched __down(struct semaphore * sem)

{

	DOWN_VAR

	DOWN_HEAD(TASK_UNINTERRUPTIBLE)

	if (waking_non_zero(sem))

		break;

	schedule();

	DOWN_TAIL(TASK_UNINTERRUPTIBLE)

}

int __sched __down_interruptible(struct semaphore * sem)

{

	int ret = 0;

	DOWN_VAR

	DOWN_HEAD(TASK_INTERRUPTIBLE)

	ret = waking_non_zero_interruptible(sem, tsk);

	if (ret)

	{

		if (ret == 1)

			/* ret != 0 only if we get interrupted -arca */

			ret = 0;

		break;

	}

	schedule();

	DOWN_TAIL(TASK_INTERRUPTIBLE)

	return ret;

}

int __down_trylock(struct semaphore * sem)

{

	return waking_non_zero_trylock(sem);

}

 */

#if defined(__SH5__) || defined(CONFIG_CPU_SH5)

struct user fpu_struct {

struct user_fpu_struct {

	unsigned long fp_regs[32];

	unsigned int fpscr;

};