1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
 
 4 */
 5
 6#ifndef __UM_THREAD_INFO_H
 7#define __UM_THREAD_INFO_H
 8
 9#define THREAD_SIZE_ORDER CONFIG_KERNEL_STACK_ORDER
10#define THREAD_SIZE ((1 << CONFIG_KERNEL_STACK_ORDER) * PAGE_SIZE)
11
12#ifndef __ASSEMBLY__
13
14#include <asm/types.h>
15#include <asm/page.h>
16#include <asm/segment.h>
17#include <sysdep/ptrace_user.h>
18
19struct thread_info {
20	struct task_struct	*task;		/* main task structure */
 
21	unsigned long		flags;		/* low level flags */
22	__u32			cpu;		/* current CPU */
23	int			preempt_count;  /* 0 => preemptable,
24						   <0 => BUG */
 
 
 
 
25	struct thread_info	*real_thread;    /* Points to non-IRQ stack */
26	unsigned long aux_fp_regs[FP_SIZE];	/* auxiliary fp_regs to save/restore
27						   them out-of-band */
28};
29
30#define INIT_THREAD_INFO(tsk)			\
31{						\
32	.task =		&tsk,			\
 
33	.flags =		0,		\
34	.cpu =		0,			\
35	.preempt_count = INIT_PREEMPT_COUNT,	\
 
 
 
 
36	.real_thread = NULL,			\
37}
38
 
 
 
 
39/* how to get the thread information struct from C */
40static inline struct thread_info *current_thread_info(void)
41{
42	struct thread_info *ti;
43	unsigned long mask = THREAD_SIZE - 1;
44	void *p;
45
46	asm volatile ("" : "=r" (p) : "0" (&ti));
47	ti = (struct thread_info *) (((unsigned long)p) & ~mask);
48	return ti;
49}
50
 
 
51#endif
52
 
 
53#define TIF_SYSCALL_TRACE	0	/* syscall trace active */
54#define TIF_SIGPENDING		1	/* signal pending */
55#define TIF_NEED_RESCHED	2	/* rescheduling necessary */
56#define TIF_NOTIFY_SIGNAL	3	/* signal notifications exist */
 
57#define TIF_RESTART_BLOCK	4
58#define TIF_MEMDIE		5	/* is terminating due to OOM killer */
59#define TIF_SYSCALL_AUDIT	6
60#define TIF_RESTORE_SIGMASK	7
61#define TIF_NOTIFY_RESUME	8
62#define TIF_SECCOMP		9	/* secure computing */
63#define TIF_SINGLESTEP		10	/* single stepping userspace */
64
65#define _TIF_SYSCALL_TRACE	(1 << TIF_SYSCALL_TRACE)
66#define _TIF_SIGPENDING		(1 << TIF_SIGPENDING)
67#define _TIF_NEED_RESCHED	(1 << TIF_NEED_RESCHED)
68#define _TIF_NOTIFY_SIGNAL	(1 << TIF_NOTIFY_SIGNAL)
69#define _TIF_MEMDIE		(1 << TIF_MEMDIE)
70#define _TIF_SYSCALL_AUDIT	(1 << TIF_SYSCALL_AUDIT)
71#define _TIF_SECCOMP		(1 << TIF_SECCOMP)
72#define _TIF_SINGLESTEP		(1 << TIF_SINGLESTEP)
73
74#endif

 
 1/*
 2 * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
 3 * Licensed under the GPL
 4 */
 5
 6#ifndef __UM_THREAD_INFO_H
 7#define __UM_THREAD_INFO_H
 8
 
 
 
 9#ifndef __ASSEMBLY__
10
11#include <asm/types.h>
12#include <asm/page.h>
13#include <asm/uaccess.h>
 
14
15struct thread_info {
16	struct task_struct	*task;		/* main task structure */
17	struct exec_domain	*exec_domain;	/* execution domain */
18	unsigned long		flags;		/* low level flags */
19	__u32			cpu;		/* current CPU */
20	int			preempt_count;  /* 0 => preemptable,
21						   <0 => BUG */
22	mm_segment_t		addr_limit;	/* thread address space:
23					 	   0-0xBFFFFFFF for user
24						   0-0xFFFFFFFF for kernel */
25	struct restart_block    restart_block;
26	struct thread_info	*real_thread;    /* Points to non-IRQ stack */
 
 
27};
28
29#define INIT_THREAD_INFO(tsk)			\
30{						\
31	.task =		&tsk,			\
32	.exec_domain =	&default_exec_domain,	\
33	.flags =		0,		\
34	.cpu =		0,			\
35	.preempt_count = INIT_PREEMPT_COUNT,	\
36	.addr_limit =	KERNEL_DS,		\
37	.restart_block =  {			\
38		.fn =  do_no_restart_syscall,	\
39	},					\
40	.real_thread = NULL,			\
41}
42
43#define init_thread_info	(init_thread_union.thread_info)
44#define init_stack		(init_thread_union.stack)
45
46#define THREAD_SIZE ((1 << CONFIG_KERNEL_STACK_ORDER) * PAGE_SIZE)
47/* how to get the thread information struct from C */
48static inline struct thread_info *current_thread_info(void)
49{
50	struct thread_info *ti;
51	unsigned long mask = THREAD_SIZE - 1;
52	void *p;
53
54	asm volatile ("" : "=r" (p) : "0" (&ti));
55	ti = (struct thread_info *) (((unsigned long)p) & ~mask);
56	return ti;
57}
58
59#define THREAD_SIZE_ORDER CONFIG_KERNEL_STACK_ORDER
60
61#endif
62
63#define PREEMPT_ACTIVE		0x10000000
64
65#define TIF_SYSCALL_TRACE	0	/* syscall trace active */
66#define TIF_SIGPENDING		1	/* signal pending */
67#define TIF_NEED_RESCHED	2	/* rescheduling necessary */
68#define TIF_POLLING_NRFLAG      3       /* true if poll_idle() is polling
69					 * TIF_NEED_RESCHED */
70#define TIF_RESTART_BLOCK	4
71#define TIF_MEMDIE		5	/* is terminating due to OOM killer */
72#define TIF_SYSCALL_AUDIT	6
73#define TIF_RESTORE_SIGMASK	7
74#define TIF_NOTIFY_RESUME	8
 
 
75
76#define _TIF_SYSCALL_TRACE	(1 << TIF_SYSCALL_TRACE)
77#define _TIF_SIGPENDING		(1 << TIF_SIGPENDING)
78#define _TIF_NEED_RESCHED	(1 << TIF_NEED_RESCHED)
79#define _TIF_POLLING_NRFLAG     (1 << TIF_POLLING_NRFLAG)
80#define _TIF_MEMDIE		(1 << TIF_MEMDIE)
81#define _TIF_SYSCALL_AUDIT	(1 << TIF_SYSCALL_AUDIT)
 
 
82
83#endif