[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / h8300 / include / asm / thread_info.h

/* thread_info.h: h8300 low-level thread information
 * adapted from the i386 and PPC versions by Yoshinori Sato <ysato@users.sourceforge.jp>
 *
 * Copyright (C) 2002  David Howells (dhowells@redhat.com)
 * - Incorporating suggestions made by Linus Torvalds and Dave Miller
 */

#ifndef _ASM_THREAD_INFO_H
#define _ASM_THREAD_INFO_H

#include <asm/page.h>

#ifdef __KERNEL__

#ifndef __ASSEMBLY__

/*
 * low level task data.
 * If you change this, change the TI_* offsets below to match.
 */
struct thread_info {
	struct task_struct *task;		/* main task structure */
	struct exec_domain *exec_domain;	/* execution domain */
	unsigned long	   flags;		/* low level flags */
	int		   cpu;			/* cpu we're on */
	int		   preempt_count;	/* 0 => preemptable, <0 => BUG */
	struct restart_block restart_block;
};

/*
 * 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 = INIT_PREEMPT_COUNT,	\
	.restart_block	= {			\
		.fn = do_no_restart_syscall,	\
	},					\
}

#define init_thread_info	(init_thread_union.thread_info)
#define init_stack		(init_thread_union.stack)


/*
 * Size of kernel stack for each process. This must be a power of 2...
 */
#define THREAD_SIZE_ORDER	1
#define THREAD_SIZE		8192	/* 2 pages */


/* how to get the thread information struct from C */
static inline struct thread_info *current_thread_info(void)
{
	struct thread_info *ti;
	__asm__(
		"mov.l	sp, %0 \n\t"
		"and.l	%1, %0"
		: "=&r"(ti)
		: "i" (~(THREAD_SIZE-1))
		);
	return ti;
}

#endif /* __ASSEMBLY__ */

/*
 * Offsets in thread_info structure, used in assembly code
 */
#define TI_TASK		0
#define TI_EXECDOMAIN	4
#define TI_FLAGS	8
#define TI_CPU		12
#define TI_PRE_COUNT	16

#define	PREEMPT_ACTIVE	0x4000000

/*
 * thread information flag bit numbers
 */
#define TIF_SYSCALL_TRACE	0	/* syscall trace active */
#define TIF_SIGPENDING		1	/* signal pending */
#define TIF_NEED_RESCHED	2	/* rescheduling necessary */
#define TIF_MEMDIE		4	/* is terminating due to OOM killer */
#define TIF_RESTORE_SIGMASK	5	/* restore signal mask in do_signal() */
#define TIF_NOTIFY_RESUME	6	/* callback before returning to user */

/* as above, but as bit values */
#define _TIF_SYSCALL_TRACE	(1<<TIF_SYSCALL_TRACE)
#define _TIF_SIGPENDING		(1<<TIF_SIGPENDING)
#define _TIF_NEED_RESCHED	(1<<TIF_NEED_RESCHED)
#define _TIF_NOTIFY_RESUME	(1 << TIF_NOTIFY_RESUME)

#define _TIF_WORK_MASK		0x0000FFFE	/* work to do on interrupt/exception return */

#endif /* __KERNEL__ */

#endif /* _ASM_THREAD_INFO_H */
Commit	Line	Data
1da177e4 LT	1	/* thread_info.h: h8300 low-level thread information
	2	* adapted from the i386 and PPC versions by Yoshinori Sato <ysato@users.sourceforge.jp>
	3	*
	4	* Copyright (C) 2002 David Howells (dhowells@redhat.com)
	5	* - Incorporating suggestions made by Linus Torvalds and Dave Miller
	6	*/
	7
	8	#ifndef _ASM_THREAD_INFO_H
	9	#define _ASM_THREAD_INFO_H
	10
	11	#include <asm/page.h>
	12
	13	#ifdef __KERNEL__
	14
	15	#ifndef __ASSEMBLY__
	16
	17	/*
	18	* low level task data.
	19	* If you change this, change the TI_* offsets below to match.
	20	*/
	21	struct thread_info {
	22	struct task_struct task; / main task structure */
	23	struct exec_domain exec_domain; / execution domain */
	24	unsigned long flags; /* low level flags */
	25	int cpu; /* cpu we're on */
dcd497f9	26	int preempt_count; /* 0 => preemptable, <0 => BUG */
1da177e4 LT	27	struct restart_block restart_block;
	28	};
	29
	30	/*
	31	* macros/functions for gaining access to the thread information structure
	32	*/
	33	#define INIT_THREAD_INFO(tsk) \
	34	{ \
	35	.task = &tsk, \
	36	.exec_domain = &default_exec_domain, \
	37	.flags = 0, \
	38	.cpu = 0, \
c99e6efe	39	.preempt_count = INIT_PREEMPT_COUNT, \
1da177e4 LT	40	.restart_block = { \
	41	.fn = do_no_restart_syscall, \
	42	}, \
	43	}
	44
	45	#define init_thread_info (init_thread_union.thread_info)
	46	#define init_stack (init_thread_union.stack)
	47
	48
	49	/*
	50	* Size of kernel stack for each process. This must be a power of 2...
	51	*/
b69c49b7	52	#define THREAD_SIZE_ORDER 1
1da177e4 LT	53	#define THREAD_SIZE 8192 /* 2 pages */
	54
	55
	56	/* how to get the thread information struct from C */
	57	static inline struct thread_info *current_thread_info(void)
	58	{
	59	struct thread_info *ti;
	60	__asm__(
	61	"mov.l sp, %0 \n\t"
	62	"and.l %1, %0"
	63	: "=&r"(ti)
	64	: "i" (~(THREAD_SIZE-1))
	65	);
	66	return ti;
	67	}
	68
1da177e4 LT	69	#endif /* __ASSEMBLY__ */
	70
	71	/*
	72	* Offsets in thread_info structure, used in assembly code
	73	*/
	74	#define TI_TASK 0
	75	#define TI_EXECDOMAIN 4
	76	#define TI_FLAGS 8
	77	#define TI_CPU 12
	78	#define TI_PRE_COUNT 16
	79
	80	#define PREEMPT_ACTIVE 0x4000000
	81
	82	/*
	83	* thread information flag bit numbers
	84	*/
	85	#define TIF_SYSCALL_TRACE 0 /* syscall trace active */
a583f1b5 SE	86	#define TIF_SIGPENDING 1 /* signal pending */
a583f1b5 SE	87	#define TIF_NEED_RESCHED 2 /* rescheduling necessary */
0ddc9324	88	#define TIF_MEMDIE 4 /* is terminating due to OOM killer */
a583f1b5	89	#define TIF_RESTORE_SIGMASK 5 /* restore signal mask in do_signal() */
d0420c83	90	#define TIF_NOTIFY_RESUME 6 /* callback before returning to user */
1da177e4 LT	91
	92	/* as above, but as bit values */
	93	#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE)
1da177e4 LT	94	#define _TIF_SIGPENDING (1<<TIF_SIGPENDING)
1da177e4 LT	95	#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED)
d0420c83	96	#define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME)
1da177e4 LT	97
	98	#define _TIF_WORK_MASK 0x0000FFFE /* work to do on interrupt/exception return */
	99
	100	#endif /* __KERNEL__ */
	101
	102	#endif /* _ASM_THREAD_INFO_H */