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10#ifndef __ASM_ARM_THREAD_INFO_H
11#define __ASM_ARM_THREAD_INFO_H
12
13#ifdef __KERNEL__
14
15#include <linux/compiler.h>
16#include <asm/fpstate.h>
17
18#define THREAD_SIZE_ORDER 1
19#define THREAD_SIZE 8192
20#define THREAD_START_SP (THREAD_SIZE - 8)
21
22#ifndef __ASSEMBLY__
23
24struct task_struct;
25struct exec_domain;
26
27#include <asm/types.h>
28#include <asm/domain.h>
29
30typedef unsigned long mm_segment_t;
31
32struct cpu_context_save {
33 __u32 r4;
34 __u32 r5;
35 __u32 r6;
36 __u32 r7;
37 __u32 r8;
38 __u32 r9;
39 __u32 sl;
40 __u32 fp;
41 __u32 sp;
42 __u32 pc;
43 __u32 extra[2];
44};
45
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49
50struct thread_info {
51 unsigned long flags;
52 int preempt_count;
53 mm_segment_t addr_limit;
54 struct task_struct *task;
55 struct exec_domain *exec_domain;
56 __u32 cpu;
57 __u32 cpu_domain;
58 struct cpu_context_save cpu_context;
59 __u32 syscall;
60 __u8 used_cp[16];
61 unsigned long tp_value;
62 struct crunch_state crunchstate;
63 union fp_state fpstate __attribute__((aligned(8)));
64 union vfp_state vfpstate;
65#ifdef CONFIG_ARM_THUMBEE
66 unsigned long thumbee_state;
67#endif
68 struct restart_block restart_block;
69};
70
71#define INIT_THREAD_INFO(tsk) \
72{ \
73 .task = &tsk, \
74 .exec_domain = &default_exec_domain, \
75 .flags = 0, \
76 .preempt_count = INIT_PREEMPT_COUNT, \
77 .addr_limit = KERNEL_DS, \
78 .cpu_domain = domain_val(DOMAIN_USER, DOMAIN_MANAGER) | \
79 domain_val(DOMAIN_KERNEL, DOMAIN_MANAGER) | \
80 domain_val(DOMAIN_IO, DOMAIN_CLIENT), \
81 .restart_block = { \
82 .fn = do_no_restart_syscall, \
83 }, \
84}
85
86#define init_thread_info (init_thread_union.thread_info)
87#define init_stack (init_thread_union.stack)
88
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92static inline struct thread_info *current_thread_info(void) __attribute_const__;
93
94static inline struct thread_info *current_thread_info(void)
95{
96 register unsigned long sp asm ("sp");
97 return (struct thread_info *)(sp & ~(THREAD_SIZE - 1));
98}
99
100#define thread_saved_pc(tsk) \
101 ((unsigned long)(task_thread_info(tsk)->cpu_context.pc))
102#define thread_saved_sp(tsk) \
103 ((unsigned long)(task_thread_info(tsk)->cpu_context.sp))
104#define thread_saved_fp(tsk) \
105 ((unsigned long)(task_thread_info(tsk)->cpu_context.fp))
106
107extern void crunch_task_disable(struct thread_info *);
108extern void crunch_task_copy(struct thread_info *, void *);
109extern void crunch_task_restore(struct thread_info *, void *);
110extern void crunch_task_release(struct thread_info *);
111
112extern void iwmmxt_task_disable(struct thread_info *);
113extern void iwmmxt_task_copy(struct thread_info *, void *);
114extern void iwmmxt_task_restore(struct thread_info *, void *);
115extern void iwmmxt_task_release(struct thread_info *);
116extern void iwmmxt_task_switch(struct thread_info *);
117
118extern void vfp_sync_state(struct thread_info *thread);
119
120#endif
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125
126#define PREEMPT_ACTIVE 0x40000000
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136
137#define TIF_SIGPENDING 0
138#define TIF_NEED_RESCHED 1
139#define TIF_NOTIFY_RESUME 2
140#define TIF_SYSCALL_TRACE 8
141#define TIF_POLLING_NRFLAG 16
142#define TIF_USING_IWMMXT 17
143#define TIF_MEMDIE 18
144#define TIF_FREEZE 19
145#define TIF_RESTORE_SIGMASK 20
146
147#define _TIF_SIGPENDING (1 << TIF_SIGPENDING)
148#define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED)
149#define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME)
150#define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE)
151#define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG)
152#define _TIF_USING_IWMMXT (1 << TIF_USING_IWMMXT)
153#define _TIF_FREEZE (1 << TIF_FREEZE)
154#define _TIF_RESTORE_SIGMASK (1 << TIF_RESTORE_SIGMASK)
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158
159#define _TIF_WORK_MASK 0x000000ff
160
161#endif
162#endif
163