[mirror_ubuntu-kernels.git] / arch / sparc / include / asm / thread_info_64.h

/* SPDX-License-Identifier: GPL-2.0 */
/* thread_info.h: sparc64 low-level thread information
 *
 * Copyright (C) 2002  David S. Miller (davem@redhat.com)
 */

#ifndef _ASM_THREAD_INFO_H
#define _ASM_THREAD_INFO_H

#ifdef __KERNEL__

#define NSWINS		7

#define TI_FLAG_BYTE_FAULT_CODE		0
#define TI_FLAG_FAULT_CODE_SHIFT	56
#define TI_FLAG_BYTE_WSTATE		1
#define TI_FLAG_WSTATE_SHIFT		48
#define TI_FLAG_BYTE_NOERROR		2
#define TI_FLAG_BYTE_NOERROR_SHIFT	40
#define TI_FLAG_BYTE_FPDEPTH		3
#define TI_FLAG_FPDEPTH_SHIFT		32
#define TI_FLAG_BYTE_CWP		4
#define TI_FLAG_CWP_SHIFT		24
#define TI_FLAG_BYTE_WSAVED		5
#define TI_FLAG_WSAVED_SHIFT		16

#include <asm/page.h>

#ifndef __ASSEMBLY__

#include <asm/ptrace.h>
#include <asm/types.h>

struct task_struct;

struct thread_info {
	/* D$ line 1 */
	struct task_struct	*task;
	unsigned long		flags;
	__u8			fpsaved[7];
	__u8			status;
	unsigned long		ksp;

	/* D$ line 2 */
	unsigned long		fault_address;
	struct pt_regs		*kregs;
	int			preempt_count;	/* 0 => preemptable, <0 => BUG */
	__u8			new_child;
	__u8			current_ds;
	__u16			cpu;

	unsigned long		*utraps;

	struct reg_window 	reg_window[NSWINS];
	unsigned long 		rwbuf_stkptrs[NSWINS];

	unsigned long		gsr[7];
	unsigned long		xfsr[7];

	struct pt_regs		*kern_una_regs;
	unsigned int		kern_una_insn;

	unsigned long		fpregs[(7 * 256) / sizeof(unsigned long)]
		__attribute__ ((aligned(64)));
};

#endif /* !(__ASSEMBLY__) */

/* offsets into the thread_info struct for assembly code access */
#define TI_TASK		0x00000000
#define TI_FLAGS	0x00000008
#define TI_FAULT_CODE	(TI_FLAGS + TI_FLAG_BYTE_FAULT_CODE)
#define TI_WSTATE	(TI_FLAGS + TI_FLAG_BYTE_WSTATE)
#define TI_CWP		(TI_FLAGS + TI_FLAG_BYTE_CWP)
#define TI_FPDEPTH	(TI_FLAGS + TI_FLAG_BYTE_FPDEPTH)
#define TI_WSAVED	(TI_FLAGS + TI_FLAG_BYTE_WSAVED)
#define TI_SYS_NOERROR	(TI_FLAGS + TI_FLAG_BYTE_NOERROR)
#define TI_FPSAVED	0x00000010
#define TI_KSP		0x00000018
#define TI_FAULT_ADDR	0x00000020
#define TI_KREGS	0x00000028
#define TI_PRE_COUNT	0x00000030
#define TI_NEW_CHILD	0x00000034
#define TI_CURRENT_DS	0x00000035
#define TI_CPU		0x00000036
#define TI_UTRAPS	0x00000038
#define TI_REG_WINDOW	0x00000040
#define TI_RWIN_SPTRS	0x000003c0
#define TI_GSR		0x000003f8
#define TI_XFSR		0x00000430
#define TI_KUNA_REGS	0x00000468
#define TI_KUNA_INSN	0x00000470
#define TI_FPREGS	0x00000480

/* We embed this in the uppermost byte of thread_info->flags */
#define FAULT_CODE_WRITE	0x01	/* Write access, implies D-TLB	   */
#define FAULT_CODE_DTLB		0x02	/* Miss happened in D-TLB	   */
#define FAULT_CODE_ITLB		0x04	/* Miss happened in I-TLB	   */
#define FAULT_CODE_WINFIXUP	0x08	/* Miss happened during spill/fill */
#define FAULT_CODE_BLKCOMMIT	0x10	/* Use blk-commit ASI in copy_page */
#define	FAULT_CODE_BAD_RA	0x20	/* Bad RA for sun4v		   */

#if PAGE_SHIFT == 13
#define THREAD_SIZE (2*PAGE_SIZE)
#define THREAD_SHIFT (PAGE_SHIFT + 1)
#else /* PAGE_SHIFT == 13 */
#define THREAD_SIZE PAGE_SIZE
#define THREAD_SHIFT PAGE_SHIFT
#endif /* PAGE_SHIFT == 13 */

/*
 * macros/functions for gaining access to the thread information structure
 */
#ifndef __ASSEMBLY__

#define INIT_THREAD_INFO(tsk)				\
{							\
	.task		=	&tsk,			\
	.current_ds	=	ASI_P,			\
	.preempt_count	=	INIT_PREEMPT_COUNT,	\
}

#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 */
register struct thread_info *current_thread_info_reg asm("g6");
#define current_thread_info()	(current_thread_info_reg)

/* thread information allocation */
#if PAGE_SHIFT == 13
#define THREAD_SIZE_ORDER	1
#else /* PAGE_SHIFT == 13 */
#define THREAD_SIZE_ORDER	0
#endif /* PAGE_SHIFT == 13 */

#define __thread_flag_byte_ptr(ti)	\
	((unsigned char *)(&((ti)->flags)))
#define __cur_thread_flag_byte_ptr	__thread_flag_byte_ptr(current_thread_info())

#define get_thread_fault_code()		(__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_FAULT_CODE])
#define set_thread_fault_code(val)	(__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_FAULT_CODE] = (val))
#define get_thread_wstate()		(__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_WSTATE])
#define set_thread_wstate(val)		(__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_WSTATE] = (val))
#define get_thread_cwp()		(__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_CWP])
#define set_thread_cwp(val)		(__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_CWP] = (val))
#define get_thread_noerror()		(__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_NOERROR])
#define set_thread_noerror(val)		(__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_NOERROR] = (val))
#define get_thread_fpdepth()		(__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_FPDEPTH])
#define set_thread_fpdepth(val)		(__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_FPDEPTH] = (val))
#define get_thread_wsaved()		(__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_WSAVED])
#define set_thread_wsaved(val)		(__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_WSAVED] = (val))
#endif /* !(__ASSEMBLY__) */

/*
 * Thread information flags, only 16 bits are available as we encode
 * other values into the upper 6 bytes.
 *
 * On trap return we need to test several values:
 *
 * user:	need_resched, notify_resume, sigpending, wsaved
 * kernel:	fpdepth
 *
 * So to check for work in the kernel case we simply load the fpdepth
 * byte out of the flags and test it.  For the user case we encode the
 * lower 3 bytes of flags as follows:
 *	----------------------------------------
 *	| wsaved | flags byte 1 | flags byte 2 |
 *	----------------------------------------
 * This optimizes the user test into:
 *	ldx		[%g6 + TI_FLAGS], REG1
 *	sethi		%hi(_TIF_USER_WORK_MASK), REG2
 *	or		REG2, %lo(_TIF_USER_WORK_MASK), REG2
 *	andcc		REG1, REG2, %g0
 *	be,pt		no_work_to_do
 *	 nop
 */
#define TIF_SYSCALL_TRACE	0	/* syscall trace active */
#define TIF_NOTIFY_RESUME	1	/* callback before returning to user */
#define TIF_SIGPENDING		2	/* signal pending */
#define TIF_NEED_RESCHED	3	/* rescheduling necessary */
/* flag bit 4 is available */
#define TIF_UNALIGNED		5	/* allowed to do unaligned accesses */
#define TIF_UPROBE		6	/* breakpointed or singlestepped */
#define TIF_32BIT		7	/* 32-bit binary */
#define TIF_NOHZ		8	/* in adaptive nohz mode */
#define TIF_SECCOMP		9	/* secure computing */
#define TIF_SYSCALL_AUDIT	10	/* syscall auditing active */
#define TIF_SYSCALL_TRACEPOINT	11	/* syscall tracepoint instrumentation */
/* NOTE: Thread flags >= 12 should be ones we have no interest
 *       in using in assembly, else we can't use the mask as
 *       an immediate value in instructions such as andcc.
 */
/* flag bit 12 is available */
#define TIF_MEMDIE		13	/* is terminating due to OOM killer */
#define TIF_POLLING_NRFLAG	14

#define _TIF_SYSCALL_TRACE	(1<<TIF_SYSCALL_TRACE)
#define _TIF_NOTIFY_RESUME	(1<<TIF_NOTIFY_RESUME)
#define _TIF_SIGPENDING		(1<<TIF_SIGPENDING)
#define _TIF_NEED_RESCHED	(1<<TIF_NEED_RESCHED)
#define _TIF_UNALIGNED		(1<<TIF_UNALIGNED)
#define _TIF_UPROBE		(1<<TIF_UPROBE)
#define _TIF_32BIT		(1<<TIF_32BIT)
#define _TIF_NOHZ		(1<<TIF_NOHZ)
#define _TIF_SECCOMP		(1<<TIF_SECCOMP)
#define _TIF_SYSCALL_AUDIT	(1<<TIF_SYSCALL_AUDIT)
#define _TIF_SYSCALL_TRACEPOINT	(1<<TIF_SYSCALL_TRACEPOINT)
#define _TIF_POLLING_NRFLAG	(1<<TIF_POLLING_NRFLAG)

#define _TIF_USER_WORK_MASK	((0xff << TI_FLAG_WSAVED_SHIFT) | \
				 _TIF_DO_NOTIFY_RESUME_MASK | \
				 _TIF_NEED_RESCHED)
#define _TIF_DO_NOTIFY_RESUME_MASK	(_TIF_NOTIFY_RESUME | \
					 _TIF_SIGPENDING | _TIF_UPROBE)

#define is_32bit_task()	(test_thread_flag(TIF_32BIT))

/*
 * Thread-synchronous status.
 *
 * This is different from the flags in that nobody else
 * ever touches our thread-synchronous status, so we don't
 * have to worry about atomic accesses.
 *
 * Note that there are only 8 bits available.
 */

#ifndef __ASSEMBLY__

#define thread32_stack_is_64bit(__SP) (((__SP) & 0x1) != 0)
#define test_thread_64bit_stack(__SP) \
	((test_thread_flag(TIF_32BIT) && !thread32_stack_is_64bit(__SP)) ? \
	 false : true)

#endif	/* !__ASSEMBLY__ */

#endif /* __KERNEL__ */

#endif /* _ASM_THREAD_INFO_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
f5e706ad SR	2	/* thread_info.h: sparc64 low-level thread information
	3	*
	4	* Copyright (C) 2002 David S. Miller (davem@redhat.com)
	5	*/
	6
	7	#ifndef _ASM_THREAD_INFO_H
	8	#define _ASM_THREAD_INFO_H
	9
	10	#ifdef __KERNEL__
	11
	12	#define NSWINS 7
	13
	14	#define TI_FLAG_BYTE_FAULT_CODE 0
	15	#define TI_FLAG_FAULT_CODE_SHIFT 56
	16	#define TI_FLAG_BYTE_WSTATE 1
	17	#define TI_FLAG_WSTATE_SHIFT 48
dff933da AV	18	#define TI_FLAG_BYTE_NOERROR 2
	19	#define TI_FLAG_BYTE_NOERROR_SHIFT 40
	20	#define TI_FLAG_BYTE_FPDEPTH 3
	21	#define TI_FLAG_FPDEPTH_SHIFT 32
	22	#define TI_FLAG_BYTE_CWP 4
	23	#define TI_FLAG_CWP_SHIFT 24
f5e706ad SR	24	#define TI_FLAG_BYTE_WSAVED 5
	25	#define TI_FLAG_WSAVED_SHIFT 16
	26
	27	#include <asm/page.h>
	28
	29	#ifndef __ASSEMBLY__
	30
	31	#include <asm/ptrace.h>
	32	#include <asm/types.h>
	33
	34	struct task_struct;
f5e706ad SR	35
	36	struct thread_info {
	37	/* D$ line 1 */
	38	struct task_struct *task;
	39	unsigned long flags;
	40	__u8 fpsaved[7];
	41	__u8 status;
	42	unsigned long ksp;
	43
	44	/* D$ line 2 */
	45	unsigned long fault_address;
	46	struct pt_regs *kregs;
f5e706ad SR	47	int preempt_count; /* 0 => preemptable, <0 => BUG */
f5e706ad SR	48	__u8 new_child;
dff933da	49	__u8 current_ds;
f5e706ad SR	50	__u16 cpu;
	51
	52	unsigned long *utraps;
	53
	54	struct reg_window reg_window[NSWINS];
	55	unsigned long rwbuf_stkptrs[NSWINS];
	56
	57	unsigned long gsr[7];
	58	unsigned long xfsr[7];
	59
f5e706ad SR	60	struct pt_regs *kern_una_regs;
	61	unsigned int kern_una_insn;
	62
e2653143 DM	63	unsigned long fpregs[(7 * 256) / sizeof(unsigned long)]
e2653143 DM	64	__attribute__ ((aligned(64)));
f5e706ad SR	65	};
	66
	67	#endif /* !(__ASSEMBLY__) */
	68
	69	/* offsets into the thread_info struct for assembly code access */
	70	#define TI_TASK 0x00000000
	71	#define TI_FLAGS 0x00000008
	72	#define TI_FAULT_CODE (TI_FLAGS + TI_FLAG_BYTE_FAULT_CODE)
	73	#define TI_WSTATE (TI_FLAGS + TI_FLAG_BYTE_WSTATE)
	74	#define TI_CWP (TI_FLAGS + TI_FLAG_BYTE_CWP)
f5e706ad SR	75	#define TI_FPDEPTH (TI_FLAGS + TI_FLAG_BYTE_FPDEPTH)
f5e706ad SR	76	#define TI_WSAVED (TI_FLAGS + TI_FLAG_BYTE_WSAVED)
dff933da	77	#define TI_SYS_NOERROR (TI_FLAGS + TI_FLAG_BYTE_NOERROR)
f5e706ad SR	78	#define TI_FPSAVED 0x00000010
	79	#define TI_KSP 0x00000018
	80	#define TI_FAULT_ADDR 0x00000020
	81	#define TI_KREGS 0x00000028
14464772 RW	82	#define TI_PRE_COUNT 0x00000030
	83	#define TI_NEW_CHILD 0x00000034
	84	#define TI_CURRENT_DS 0x00000035
	85	#define TI_CPU 0x00000036
	86	#define TI_UTRAPS 0x00000038
	87	#define TI_REG_WINDOW 0x00000040
	88	#define TI_RWIN_SPTRS 0x000003c0
	89	#define TI_GSR 0x000003f8
	90	#define TI_XFSR 0x00000430
	91	#define TI_KUNA_REGS 0x00000468
	92	#define TI_KUNA_INSN 0x00000470
f56141e3	93	#define TI_FPREGS 0x00000480
f5e706ad SR	94
	95	/* We embed this in the uppermost byte of thread_info->flags */
	96	#define FAULT_CODE_WRITE 0x01 /* Write access, implies D-TLB */
	97	#define FAULT_CODE_DTLB 0x02 /* Miss happened in D-TLB */
	98	#define FAULT_CODE_ITLB 0x04 /* Miss happened in I-TLB */
	99	#define FAULT_CODE_WINFIXUP 0x08 /* Miss happened during spill/fill */
	100	#define FAULT_CODE_BLKCOMMIT 0x10 /* Use blk-commit ASI in copy_page */
4ccb9272	101	#define FAULT_CODE_BAD_RA 0x20 /* Bad RA for sun4v */
f5e706ad SR	102
	103	#if PAGE_SHIFT == 13
	104	#define THREAD_SIZE (2*PAGE_SIZE)
	105	#define THREAD_SHIFT (PAGE_SHIFT + 1)
	106	#else /* PAGE_SHIFT == 13 */
	107	#define THREAD_SIZE PAGE_SIZE
	108	#define THREAD_SHIFT PAGE_SHIFT
	109	#endif /* PAGE_SHIFT == 13 */
	110
f5e706ad SR	111	/*
f5e706ad SR	112	* macros/functions for gaining access to the thread information structure
f5e706ad SR	113	*/
	114	#ifndef __ASSEMBLY__
	115
	116	#define INIT_THREAD_INFO(tsk) \
	117	{ \
	118	.task = &tsk, \
dff933da	119	.current_ds = ASI_P, \
c99e6efe	120	.preempt_count = INIT_PREEMPT_COUNT, \
f5e706ad SR	121	}
	122
	123	#define init_thread_info (init_thread_union.thread_info)
	124	#define init_stack (init_thread_union.stack)
	125
	126	/* how to get the thread information struct from C */
	127	register struct thread_info *current_thread_info_reg asm("g6");
	128	#define current_thread_info() (current_thread_info_reg)
	129
	130	/* thread information allocation */
	131	#if PAGE_SHIFT == 13
66bb4cda	132	#define THREAD_SIZE_ORDER 1
f5e706ad	133	#else /* PAGE_SHIFT == 13 */
66bb4cda	134	#define THREAD_SIZE_ORDER 0
f5e706ad SR	135	#endif /* PAGE_SHIFT == 13 */
f5e706ad SR	136
f5e706ad SR	137	#define __thread_flag_byte_ptr(ti) \
	138	((unsigned char *)(&((ti)->flags)))
	139	#define __cur_thread_flag_byte_ptr __thread_flag_byte_ptr(current_thread_info())
	140
	141	#define get_thread_fault_code() (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_FAULT_CODE])
	142	#define set_thread_fault_code(val) (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_FAULT_CODE] = (val))
	143	#define get_thread_wstate() (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_WSTATE])
	144	#define set_thread_wstate(val) (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_WSTATE] = (val))
	145	#define get_thread_cwp() (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_CWP])
	146	#define set_thread_cwp(val) (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_CWP] = (val))
dff933da AV	147	#define get_thread_noerror() (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_NOERROR])
dff933da AV	148	#define set_thread_noerror(val) (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_NOERROR] = (val))
f5e706ad SR	149	#define get_thread_fpdepth() (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_FPDEPTH])
	150	#define set_thread_fpdepth(val) (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_FPDEPTH] = (val))
	151	#define get_thread_wsaved() (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_WSAVED])
	152	#define set_thread_wsaved(val) (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_WSAVED] = (val))
f5e706ad SR	153	#endif /* !(__ASSEMBLY__) */
	154
	155	/*
	156	* Thread information flags, only 16 bits are available as we encode
	157	* other values into the upper 6 bytes.
	158	*
	159	* On trap return we need to test several values:
	160	*
c7d5a005	161	* user: need_resched, notify_resume, sigpending, wsaved
f5e706ad SR	162	* kernel: fpdepth
	163	*
	164	* So to check for work in the kernel case we simply load the fpdepth
	165	* byte out of the flags and test it. For the user case we encode the
	166	* lower 3 bytes of flags as follows:
	167	* ----------------------------------------
	168	* \| wsaved \| flags byte 1 \| flags byte 2 \|
	169	* ----------------------------------------
	170	* This optimizes the user test into:
	171	* ldx [%g6 + TI_FLAGS], REG1
	172	* sethi %hi(_TIF_USER_WORK_MASK), REG2
	173	* or REG2, %lo(_TIF_USER_WORK_MASK), REG2
	174	* andcc REG1, REG2, %g0
	175	* be,pt no_work_to_do
	176	* nop
	177	*/
	178	#define TIF_SYSCALL_TRACE 0 /* syscall trace active */
e35a8925	179	#define TIF_NOTIFY_RESUME 1 /* callback before returning to user */
f5e706ad SR	180	#define TIF_SIGPENDING 2 /* signal pending */
f5e706ad SR	181	#define TIF_NEED_RESCHED 3 /* rescheduling necessary */
c7d5a005	182	/* flag bit 4 is available */
f5e706ad	183	#define TIF_UNALIGNED 5 /* allowed to do unaligned accesses */
e8f4aa60	184	#define TIF_UPROBE 6 /* breakpointed or singlestepped */
f5e706ad	185	#define TIF_32BIT 7 /* 32-bit binary */
812cb83a	186	#define TIF_NOHZ 8 /* in adaptive nohz mode */
f5e706ad SR	187	#define TIF_SECCOMP 9 /* secure computing */
f5e706ad SR	188	#define TIF_SYSCALL_AUDIT 10 /* syscall auditing active */
c658ad1b	189	#define TIF_SYSCALL_TRACEPOINT 11 /* syscall tracepoint instrumentation */
f5e706ad SR	190	/* NOTE: Thread flags >= 12 should be ones we have no interest
	191	* in using in assembly, else we can't use the mask as
	192	* an immediate value in instructions such as andcc.
	193	*/
94673e96	194	/* flag bit 12 is available */
0ddc9324	195	#define TIF_MEMDIE 13 /* is terminating due to OOM killer */
f5e706ad SR	196	#define TIF_POLLING_NRFLAG 14
	197
	198	#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE)
e35a8925	199	#define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME)
f5e706ad SR	200	#define _TIF_SIGPENDING (1<<TIF_SIGPENDING)
f5e706ad SR	201	#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED)
f5e706ad	202	#define _TIF_UNALIGNED (1<<TIF_UNALIGNED)
e8f4aa60	203	#define _TIF_UPROBE (1<<TIF_UPROBE)
f5e706ad	204	#define _TIF_32BIT (1<<TIF_32BIT)
812cb83a	205	#define _TIF_NOHZ (1<<TIF_NOHZ)
f5e706ad SR	206	#define _TIF_SECCOMP (1<<TIF_SECCOMP)
f5e706ad SR	207	#define _TIF_SYSCALL_AUDIT (1<<TIF_SYSCALL_AUDIT)
c658ad1b	208	#define _TIF_SYSCALL_TRACEPOINT (1<<TIF_SYSCALL_TRACEPOINT)
f5e706ad SR	209	#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG)
	210
	211	#define _TIF_USER_WORK_MASK ((0xff << TI_FLAG_WSAVED_SHIFT) \| \
e35a8925	212	_TIF_DO_NOTIFY_RESUME_MASK \| \
c7d5a005	213	_TIF_NEED_RESCHED)
e8f4aa60 AP	214	#define _TIF_DO_NOTIFY_RESUME_MASK (_TIF_NOTIFY_RESUME \| \
e8f4aa60 AP	215	_TIF_SIGPENDING \| _TIF_UPROBE)
f5e706ad	216
a17c8b54 EP	217	#define is_32bit_task() (test_thread_flag(TIF_32BIT))
a17c8b54 EP	218
f5e706ad SR	219	/*
	220	* Thread-synchronous status.
	221	*
	222	* This is different from the flags in that nobody else
	223	* ever touches our thread-synchronous status, so we don't
	224	* have to worry about atomic accesses.
	225	*
	226	* Note that there are only 8 bits available.
	227	*/
f5e706ad SR	228
f5e706ad SR	229	#ifndef __ASSEMBLY__
16a80163	230
517ffce4 DM	231	#define thread32_stack_is_64bit(__SP) (((__SP) & 0x1) != 0)
	232	#define test_thread_64bit_stack(__SP) \
	233	((test_thread_flag(TIF_32BIT) && !thread32_stack_is_64bit(__SP)) ? \
	234	false : true)
	235
f5e706ad SR	236	#endif /* !__ASSEMBLY__ */
	237
	238	#endif /* __KERNEL__ */
	239
	240	#endif /* _ASM_THREAD_INFO_H */